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-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
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index fe3aa2b..3429d61 100644
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   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
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@@ -1526,6 +1558,8 @@
                   
               
                   
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+              
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index d1b5403..76e8171 100644
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@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/auth-server-config/">stable (1.7)</option>
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@@ -1526,6 +1558,8 @@
                   
               
                   
+              
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                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/auth-server-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
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@@ -1586,6 +1622,8 @@
                   
               
                   
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@@ -1616,6 +1654,8 @@
                   
               
                   
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+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/auth-server-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/auth-server-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/auth-server-config/">dev</option>
@@ -3116,19 +3166,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/coap-adapter-config/index.html b/docs/1.5/admin-guide/coap-adapter-config/index.html
index 61a7bcf..6b151b3 100644
--- a/docs/1.5/admin-guide/coap-adapter-config/index.html
+++ b/docs/1.5/admin-guide/coap-adapter-config/index.html
@@ -21,21 +21,21 @@
     <title>CoAP Adapter Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/coap-adapter-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/coap-adapter-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/coap-adapter-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/coap-adapter-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/coap-adapter-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/coap-adapter-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/coap-adapter-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/coap-adapter-config/">1.3</option>
@@ -1682,6 +1724,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/coap-adapter-config/">dev</option>
@@ -3089,19 +3133,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/command-router-config/index.html b/docs/1.5/admin-guide/command-router-config/index.html
index 4c61479..84e7e63 100644
--- a/docs/1.5/admin-guide/command-router-config/index.html
+++ b/docs/1.5/admin-guide/command-router-config/index.html
@@ -21,21 +21,21 @@
     <title>Configuring the Command Router Service :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/command-router-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/command-router-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/command-router-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/command-router-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/command-router-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/command-router-config/" selected>1.5</option>
@@ -1626,6 +1664,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/command-router-config/">dev</option>
@@ -3089,19 +3129,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/common-config/index.html b/docs/1.5/admin-guide/common-config/index.html
index c591435..0172240 100644
--- a/docs/1.5/admin-guide/common-config/index.html
+++ b/docs/1.5/admin-guide/common-config/index.html
@@ -21,21 +21,21 @@
     <title>Common Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/common-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/common-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/common-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/common-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/common-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/common-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/common-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/common-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/common-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/common-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/common-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/common-config/">dev</option>
@@ -3209,19 +3259,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
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-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/device-connection-config/index.html b/docs/1.5/admin-guide/device-connection-config/index.html
index c1322f7..080f5f2 100644
--- a/docs/1.5/admin-guide/device-connection-config/index.html
+++ b/docs/1.5/admin-guide/device-connection-config/index.html
@@ -21,21 +21,21 @@
     <title>Configuring the Device Connection Service :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/device-connection-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/device-connection-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/device-connection-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/device-connection-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/device-connection-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/device-connection-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/device-connection-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/device-connection-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/device-connection-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/device-connection-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/device-connection-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/device-connection-config/">dev</option>
@@ -3223,19 +3273,19 @@
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       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/device-registry-config/index.html b/docs/1.5/admin-guide/device-registry-config/index.html
index 0a03c57..74378a0 100644
--- a/docs/1.5/admin-guide/device-registry-config/index.html
+++ b/docs/1.5/admin-guide/device-registry-config/index.html
@@ -21,21 +21,21 @@
     <title>Device Registry Configurations :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/device-registry-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/device-registry-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/device-registry-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/device-registry-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/device-registry-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/device-registry-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/device-registry-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/device-registry-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/device-registry-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/device-registry-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/device-registry-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/device-registry-config/">dev</option>
@@ -2934,19 +2984,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
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diff --git a/docs/1.5/admin-guide/file-based-device-registry-config/index.html b/docs/1.5/admin-guide/file-based-device-registry-config/index.html
index 23a96ec..e9e6207 100644
--- a/docs/1.5/admin-guide/file-based-device-registry-config/index.html
+++ b/docs/1.5/admin-guide/file-based-device-registry-config/index.html
@@ -21,21 +21,21 @@
     <title>File Based Device Registry Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/file-based-device-registry-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/file-based-device-registry-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/file-based-device-registry-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/file-based-device-registry-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/file-based-device-registry-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/file-based-device-registry-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/file-based-device-registry-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/file-based-device-registry-config/">1.3</option>
@@ -1682,6 +1724,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/file-based-device-registry-config/">dev</option>
@@ -3357,19 +3401,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/hono-client-configuration/index.html b/docs/1.5/admin-guide/hono-client-configuration/index.html
index 74f3428..0ee61d7 100644
--- a/docs/1.5/admin-guide/hono-client-configuration/index.html
+++ b/docs/1.5/admin-guide/hono-client-configuration/index.html
@@ -21,21 +21,21 @@
     <title>Hono Client Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/hono-client-configuration/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/hono-client-configuration/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/hono-client-configuration/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/hono-client-configuration/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/hono-client-configuration/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/hono-client-configuration/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/hono-client-configuration/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/hono-client-configuration/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/hono-client-configuration/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/hono-client-configuration/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/hono-client-configuration/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/hono-client-configuration/">dev</option>
@@ -3224,19 +3274,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/http-adapter-config/index.html b/docs/1.5/admin-guide/http-adapter-config/index.html
index f97da0a..c889ad5 100644
--- a/docs/1.5/admin-guide/http-adapter-config/index.html
+++ b/docs/1.5/admin-guide/http-adapter-config/index.html
@@ -21,21 +21,21 @@
     <title>HTTP Adapter Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/http-adapter-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/http-adapter-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/http-adapter-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/http-adapter-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/http-adapter-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/http-adapter-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/http-adapter-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/http-adapter-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/http-adapter-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/http-adapter-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/http-adapter-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/http-adapter-config/">dev</option>
@@ -3108,19 +3158,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
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index 46bb4c9..37bd8c8 100644
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-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
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+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
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+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
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+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
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+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
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-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
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index e294beb..956d24f 100644
--- a/docs/1.5/admin-guide/jdbc-device-registry-config/index.html
+++ b/docs/1.5/admin-guide/jdbc-device-registry-config/index.html
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-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
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+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
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 </div>
 
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-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
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-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
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@@ -1498,7 +1498,39 @@
                   
                     
                     
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@@ -1526,6 +1558,8 @@
                   
               
                   
+              
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@@ -1556,6 +1590,8 @@
                   
               
                   
+              
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@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
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@@ -1626,6 +1664,8 @@
                   
               
                   
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+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
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-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
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index a5a2710..ae15562 100644
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+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
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@@ -1586,6 +1622,8 @@
                   
               
                   
+              
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/mongodb-device-registry-config/index.html b/docs/1.5/admin-guide/mongodb-device-registry-config/index.html
index 0eb0731..97a3a59 100644
--- a/docs/1.5/admin-guide/mongodb-device-registry-config/index.html
+++ b/docs/1.5/admin-guide/mongodb-device-registry-config/index.html
@@ -21,21 +21,21 @@
     <title>MongoDB Based Device Registry Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/mongodb-device-registry-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/mongodb-device-registry-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/mongodb-device-registry-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/mongodb-device-registry-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/mongodb-device-registry-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/mongodb-device-registry-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/mongodb-device-registry-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/mongodb-device-registry-config/">1.3</option>
@@ -1682,6 +1724,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/mongodb-device-registry-config/">dev</option>
@@ -3173,19 +3217,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/monitoring-tracing-config/index.html b/docs/1.5/admin-guide/monitoring-tracing-config/index.html
index fda73ea..653f876 100644
--- a/docs/1.5/admin-guide/monitoring-tracing-config/index.html
+++ b/docs/1.5/admin-guide/monitoring-tracing-config/index.html
@@ -21,21 +21,21 @@
     <title>Monitoring & Tracing :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/monitoring-tracing-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/monitoring-tracing-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/monitoring-tracing-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/monitoring-tracing-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/monitoring-tracing-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/monitoring-tracing-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/monitoring-tracing-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/monitoring-tracing-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/monitoring-tracing-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/monitoring-tracing-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/monitoring-tracing-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/monitoring-tracing-config/">dev</option>
@@ -3096,19 +3146,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/mqtt-adapter-config/index.html b/docs/1.5/admin-guide/mqtt-adapter-config/index.html
index b01f0e2..61d0782 100644
--- a/docs/1.5/admin-guide/mqtt-adapter-config/index.html
+++ b/docs/1.5/admin-guide/mqtt-adapter-config/index.html
@@ -21,21 +21,21 @@
     <title>MQTT Adapter Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/mqtt-adapter-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/mqtt-adapter-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/mqtt-adapter-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/mqtt-adapter-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/mqtt-adapter-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/mqtt-adapter-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/mqtt-adapter-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/mqtt-adapter-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/mqtt-adapter-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/mqtt-adapter-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/mqtt-adapter-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/mqtt-adapter-config/">dev</option>
@@ -3188,19 +3238,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/secure_communication/index.html b/docs/1.5/admin-guide/secure_communication/index.html
index 6577f98..f05eef2 100644
--- a/docs/1.5/admin-guide/secure_communication/index.html
+++ b/docs/1.5/admin-guide/secure_communication/index.html
@@ -21,21 +21,21 @@
     <title>Secure Communication :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/secure_communication/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/secure_communication/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/secure_communication/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/secure_communication/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/secure_communication/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/secure_communication/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/secure_communication/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/secure_communication/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/secure_communication/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/secure_communication/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/secure_communication/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/secure_communication/">dev</option>
@@ -3231,19 +3281,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>