[erlang-bugs] Cannot bind epmd to an IPv4 address after building with -DEPMD6

[Dariusz Gadomski]

Hello everyone,

There are users observing problems with binding to an IPv4 address with
erlang 16b3 version built with -DEPMD6 flag [1]. This flag has been added
as a response to another bug [2].

By looking at erts/epmd/src/epmd_int.h I see that the address definitions are
mutually exclusive - enabling IPv6 makes all addresses IPv6-only which may
result in problems with binding to a specific IPv4 address:
$ ERL_EPMD_ADDRESS="127.0.0.1" epmd
epmd: Fri Nov 14 11:00:47 2014: cannot parse IP address "127.0.0.1"

Can you please confirm this? Is it a known issue? Maybe there is a workaround?

[1] https://bugs.launchpad.net/ubuntu/+source/erlang/+bug/1374109
[2] https://bugs.launchpad.net/ubuntu/+source/rabbitmq-server/+bug/1312507

Thanks,
Dariusz Gadomski