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IS> This might be because those are auto-routed via loopback, so they don't
IS> really hit the driver, if I recall correctly.
Ah, that indeed seems to be the case.
Is that documented anywhere?
EF> Both broadast or multicast datagrams from me are seen twice by the filter.
IS> outgoing and incoming?
EF> I still don't know what happens to fake packets from outside pretending
EF> to be sent ``by me''. I hope they will be seen by the filter.
IS> I think they will.
It's quite hard to test. The best I could get was to set up the address in
question as an interface alias on another machine and then ping that
interface's broadcast address from there.
Indeed, those datagrams where seen by the packet filter on the machine
legitimally owning the IP faked by the other machine.
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