On Mon, Jun 18, 2007 at 03:55:28PM +0200, Ignatios Souvatzis wrote:
> > Right.  And I believe that packets sent to a broadcast address are
> > received by the sender, too, on some NICs.  This is even more overhead.
> 
> _And_ packets being received as broadcast/multicast are flagged as
> broadcast/multicast, and are dropped later, if their IP address is a
> unicast one.

Yes. But you can not flag them if the link is configured as P2P. 
But it's yet another test in the path, compared to a single MAC address lookup
in the route cache.

-- 
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
     NetBSD: 26 ans d'experience feront toujours la difference
--