** Description changed:

+ [Impact]
+ Users of RabbitMQ in IPv6 environments are unable to stop/start/restart 
rabbitmq.
+ 
+ [Test Case]
+ On and IPv6 only server:
+ sudo apt-get install rabbitmq-server
+ ...
+  * Starting message broker rabbitmq-server
+  * FAILED - check /var/log/rabbitmq/startup_\{log, _err\}
+    ...fail!
+ 
+ [Regression Potential]
+ The fix for this issue is in erlang itself; enabling IPv6 support in epmd is 
a compile time option so there is scope for regression.  Testing should ensure 
that existing IPv4 deployments of erlang tools do not regress with this change 
(validated RMQ already against PPA packages).
+ 
+ [Original Bug Report]
  Guys,
  
  I'm trying to install rabbitmq-server on Ubuntu 14.04 on a IPv6-Only
  network and it fails, look:
  
  ---
  root@server-1:~# apt-get -f install
  Reading package lists... Done
- Building dependency tree       
+ Building dependency tree
  Reading state information... Done
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  1 not fully installed or removed.
  After this operation, 0 B of additional disk space will be used.
  Setting up rabbitmq-server (3.2.4-1) ...
-  * Starting message broker rabbitmq-server
-  * FAILED - check /var/log/rabbitmq/startup_\{log, _err\}
-    ...fail!
+  * Starting message broker rabbitmq-server
+  * FAILED - check /var/log/rabbitmq/startup_\{log, _err\}
+    ...fail!
  invoke-rc.d: initscript rabbitmq-server, action "start" failed.
  dpkg: error processing package rabbitmq-server (--configure):
-  subprocess installed post-installation script returned error exit status 1
+  subprocess installed post-installation script returned error exit status 1
  Errors were encountered while processing:
-  rabbitmq-server
+  rabbitmq-server
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  ---
  
  The log:
  ---
- root@server-1:~# cat /var/log/rabbitmq/startup_log 
+ root@server-1:~# cat /var/log/rabbitmq/startup_log
  ERROR: epmd error for host "server-1": address (cannot connect to host/port)
  ---
  
  The connectivity (resolved via /etc/hosts):
  
  ---
  root@server-1:~# ping6 server-1
  PING server-1(server-1.domain.com.br) 56 data bytes
  64 bytes from server-1.domain.com.br: icmp_seq=1 ttl=64 time=0.019 ms
  64 bytes from server-1.domain.com.br: icmp_seq=2 ttl=64 time=0.044 ms
  ---
  
  However, if I comment out the "nameserver 2001:4860:4860::8844" entries
  out from /etc/resolv.conf, then, rabbitmq-server starts! Very weird...
  
  Nothing on /etc/resolv.conf now...:
  
  ---
- root@server-1:~# apt-get -f install                                           
                                                                                
                                                
+ root@server-1:~# apt-get -f install
  Reading package lists... Done
- Building dependency tree       
+ Building dependency tree
  Reading state information... Done
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  1 not fully installed or removed.
  After this operation, 0 B of additional disk space will be used.
  Setting up rabbitmq-server (3.2.4-1) ...
-  * Starting message broker rabbitmq-server
-    ...done.
+  * Starting message broker rabbitmq-server
+    ...done.
  ---
  
  I found the following topics about this on the net:
  
  * Related:
  
  http://rabbitmq.1065348.n5.nabble.com/Error-starting-rabbitmq-in-IPv6
  -environment-td32001.html
  
  * Not sure if it is related:
  
  http://blog.domb.net/?p=290
  
  http://hg.rabbitmq.com/rabbitmq-erlang-client/rev/7f53561c0c11
  
- 
  Best!
  Thiago

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https://bugs.launchpad.net/bugs/1312507

Title:
  rabbitmq-server fails to start on a IPv6-Only environment/epmd is not
  IPv6 enabled

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