Description:
The package 'lksctp-tools' was probably not installed when compiling the erlang and erlang-nox community packages.
It does not have to be a dependency for the users, but could be added as an optional dependency.
Erlang will load the library (libsctp.so.1) in run-time when it is used and can also handle if it is missing.

Additional info:
erlang R15B03-1


Steps to reproduce:
Arch package 'erlang' and 'lksctp-tools' installed (kernel module 'sctp' is also loaded):
1> gen_sctp:open().
{error,eprotonosupport}

Recompiled 'erlang' having 'lksctp-tools' installed:
1> gen_sctp:open().
{ok,#Port<0.594>}

Recompiled 'erlang' having 'lksctp-tools' installed and then removed 'lksctp-tools':
1> gen_sctp:open().
{error,eprotonosupport}