Hi,
While adding MDB support to the qca8k dsa driver I found that ipv4 mcast
groups don't always get propagated to the dsa driver. In my setup there
are 2 clients connected to the switch, both running a mdns client. The
.port_mdb_add() callback is properly called for 33:33:00:00:00:FB but
01:00:5E:00:00:FB never got propagated to the dsa driver.
The reason is that the call to ipv4_is_local_multicast() here [1] will
return true and the notifier is never called. Is this intentional or is
there something missing in the code ?
John
[1]
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/net/bridge/br_multicast.c?id=refs/tags/v4.8-rc6#n737
