Re: IFF_SIMPLEX vs bridge(4)

[der Mouse <mouse%Rodents-Montreal.ORG@localhost>]

> The setup: 4.0/i386.  Two interfaces are in a bridge.
> [...IFF_SIMPLEX-looped-back packet confusing bridge's MAC list...]

Hmm.  It can't be quite this simple, because the same thing doesn't
happen the other way.  But the effect - the MAC in question winds up
learned on the wrong interface - is definitely occurring.

I don't have time now to post the full details - I'll do that within a
day or two, unless I figure out what's wrong first.  But there's
certainly something amiss: tcpdump on "the wrong interface" shows the
broadcast ARP request twice, and it's learned wrong, are the primary
symptoms.

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