• Herbert Xu's avatar
    bridge: Only flood unregistered groups to routers · bd4265fe
    Herbert Xu authored
    The bridge currently floods packets to groups that we have never
    seen before to all ports.  This is not required by RFC4541 and
    in fact it is not desirable in environment where traffic to
    unregistered group is always present.
    
    This patch changes the behaviour so that we only send traffic
    to unregistered groups to ports marked as routers.
    
    The user can always force flooding behaviour to any given port
    by marking it as a router.
    
    Note that this change does not apply to traffic to 224.0.0.X
    as traffic to those groups must always be flooded to all ports.
    Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    bd4265fe
br_multicast.c 40.5 KB