On Tue, 2013-04-30 at 11:22 +0800, Herbert Xu wrote:

On Tue, Apr 30, 2013 at 11:17:37AM +0800, Cong Wang wrote:

quoted

One problem with this solution is that the temp mdb entry will no longer
be expired automatically any more, since no query no timer.

I am wondering if we should find other way to fix it, for example,
touching the timer as long as there is multicast traffic (non-IGMP).

mdb entries represent group subscriptions.  So what you're saying
is that group subscriptions aren't expiring.

Which isn't a problem at all since if there is no querier then group
subscriptions shouldn't expire.  There has to be at least one querier
in the network for this thing to work.  Otherwise it just degenerates
into a non-snooping switch, which is OK.

Makes sense. I will put this in the changelog.

Thanks.