Sola Zhang via dev <[email protected]> writes: > In a non-LACP balance-slb bond, bond_check_admissibility() drops all > multicast (and broadcast) on members other than the active one. When an > upstream switch snoops IGMP/MLD and forwards a group to a single member, > that member may not be the bond's active one, so the group is dropped and > a receiver behind the bond loses the stream. > > other_config:all-members-active already lets such traffic through, but it > also admits broadcast, which a flooding switch then duplicates. For the > snooped-multicast case broadcast admission is not wanted. > > Add other_config:multicast-all-members-active, which admits multicast but > not broadcast on secondary members of a balance-slb bond. It takes > priority over all-members-active: when both are set, broadcast is dropped. > Off by default. > > Signed-off-by: Sola Zhang <[email protected]> > ---
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