Subject: Re: NetBSD/xen network problems (need help)
To: Mike M. Volokhov <>
From: Manuel Bouyer <>
List: port-xen
Date: 01/23/2006 22:44:29
On Mon, Jan 23, 2006 at 03:09:08PM +0200, Mike M. Volokhov wrote:
> This may be beacuse of xennet/bridge tandem. ``The problem occurs when a
> new (unlearnt) mac address is seen by bridge which passes to all
> if_xennetS. Then all those doms send the packet back to the bridge ttl
> - 1 using their src mac, which presumably the bridge learns then.'' See
> also private mail from me.

OK, can you try the attached patch (for netbsd-3) ?
If should cause xennet and xvif to drop the packet if it's not for their
mac address when not in promiscous mode.

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference