Bruce M. Simpson wrote:
Tom Judge wrote:
<SNIP>
Personally I can't see why this approach would be a problem, but I am
not a expert. The address is defined in IEEE Std 802.1D-2004 as to
not be forwarded by bridges (which I interpret as it being link local
in a sense as switches/bridges are not allowed to forward the frame),
so I can't see it being a problem registered on multiple interfaces.
SIOCADDMULTI memberships are specific to the interface you request them
on. I can't speak for the bridging code -- I don't think it does any
special handling of multicast frames, however I'm not sure if it's smart
enough not to forward this group. Like IN_LOCALGROUP() it might need its
own 'don't forward this' clause.
Just for the record it seems that if_bridge replaces the destination MAC
of a Ethernet multicast packet with its own MAC therefore making sure
that the packets are not forwarded. Andrew can you confirm this
assumption? (Based on sys/net/if_bridge.c lines 2011-2018 on RELENG_6_2)
Tom
_______________________________________________
freebsd-net@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-net
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
