Hi all,
Recently we had an issue with RabbitMQ and EPMD bound to ipv6.

Here [1] you can find the discussion.

Note that this issue happens **only** when:
1- epmd is bound only to ipv6 interface
2- there are no other ways to look up the hostname

The problem [2] is more in Erlang than in RabbitMQ

1 - https://groups.google.com/d/msg/rabbitmq-users/mbsT8PSJTHQ/JKEwev3uBQAJ
2 - https://github.com/erlang/otp/pull/602

Regards
--
Gabriele Santomaggio
Cloud Developer @SUSE