tree 3eb37c0549c27b1db1a08aadab6166728b663348
parent f818c8f3fb9c98490df29e99aa9cddde8e0296d5
author David Lamparter <equinox@opensourcerouting.org> 1353978629 +0000
committer David Lamparter <equinox@opensourcerouting.org> 1355323087 +0100

isisd: always join all IS-IS multicast groups

The socket is only created once when an interface is brought up, and the
multicast groups were joined according to configuration at that point.
This breaks when later switching an interface to another IS-IS level.

Since, for a separate conformance issue (ANVL ISIS-6.4), we should be
inspecting the destination address anyway, the simplest fix here is to
just join all groups unconditionally.  There shouldn't be much traffic
on these anyway, worst case we might be picking up some unrelated
multicast groups due to NIC filter aliasing though...

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Tested-by: Martin Winter <mwinter@opensourcerouting.org>