Hi, On Tue, Oct 12, 2010 at 07:45:10PM +0200, Peter Rathlev wrote: > I don't know much about multicast, but aren't routed multicast packets > sent as L2 unicast between multicast routers?
No.
> I'm just guessing here,
> but I don't see why routed multicast traffic would need to have the L2
> group bit set.
Well, if you only ever have two routers in a subnet, it doesn't need
to...
But what if you have 20 routers in a subnet and want the multicast traffic
to be heard by only those 5 that are interested in it?
gert
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