[erlang-questions] How to connect erlang nodes over IPv6 (on Ubuntu 10.04 server installations, Erlang R14B1)?

Boris Mühmer <>
Mon Feb 14 23:26:47 CET 2011

Using the git-source as a base, I build a new version for testing.

The only difference of the source was, that I removed the "&&
defined(EPMD6)" from "erts/epmd/src/epmd_int.h".

After starting "empd -d" and running "erl -name test1 -setcookie
abc123 -proto_dist inet6_tcp" I got a "erl_crash.dump".

Using a new "erl" instance, I called "crashdump_viewer:start()." and
tried to load the "erl_crash.dump" file, but I always get "An error
occured: C:\fakepath\erl_crash.dump is not an Erlang crash dump"!

Looking into "erl_crash.dump" the first few lines are:
---> snipp <---
Mon Feb 14 23:00:50 2011
Slogan: Kernel pid terminated (application_controller)
System version: Erlang R14B02 (erts-5.8.3) [source] [64-bit] [smp:2:2]
[rq:2] [async-threads:0] [hipe] [kernel-poll:false]
Compiled: Mon Feb 14 22:17:17 2011
Atoms: 4043
---> snipp <---

Is the "crashdump_viewer" broken?
Are there any other tools to "analyse" an "erl_crash.dump" file?

  - boris

2011/2/14 Boris Mühmer <>:
> Is there a special option to build "epmd" with IPv6 support? Actually
> is there a system on which "epmd" binds itself to an IPv6 port?
> I checked my Windows 7 system with "netstat", but I could only see
> "epmd" binding itself to the IPv4 port.
> "configure" tries to set "HAVE_IN6" (this is set on my Ubuntu
> system(s)). I believe "AF_INET6" comes from the linux kernel.
> But "what" (I didn't want to put "who" in here) is responsible for "EPMD6"?
> Running "grep -r EPMD6 ." in the top level directory of the source
> tree just gives me a single result:
>    ./erts/epmd/src/epmd_int.h:#if defined(HAVE_IN6) &&
> defined(AF_INET6) && defined(EPMD6)
> Using grep I saw, that there a several dependencies on "HAVE_IN6" and
> "AF_INET6", but only a single one for "EPMD6".
>  - boris

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