Hi, Here are two, small feature changes I would like to submit to increase the usefulness of the multicast snooping of the bridge code. The first patch is an unaltered one I had submitted before, but since it got no feedback I'm resubmitting it here for net-next. With the recently added patch to disable snooping if there is no querier (b00589af + 248ba8ec05 + 8d50af4fb), it should be a safe choice now (without these, patch 1/2 would have introduced another potential for lost IPv6 multicast packets). Both conceptually and also with some testing and fuzzing, I couldn't spot any more causes for potential packet loss. And since the multicast snooping code has now been tried by various people, I think it should be a safe choice to apply the multicast snooping not only for IPv6 multicast packets with a scope greater than link-local, but also for packets of exactly this scope. The IPv6 standard mandates MLD reports for link-local multicast, too, so we can safely snoop them as well (in contrast to IPv4 link-local). Cheers, Linus
