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Date:      Tue, 17 Oct 2006 05:36:10 +1300
From:      Andrew Thompson <thompsa@freebsd.org>
To:        Jon Otterholm <jon.otterholm@ide.resurscentrum.se>
Cc:        freebsd-net@freebsd.org
Subject:   Re: If_bridge behaving as HUB
Message-ID:  <20061016163610.GA93501@heff.fud.org.nz>
In-Reply-To: <45335BB1.6050809@ide.resurscentrum.se>
References:  <45335BB1.6050809@ide.resurscentrum.se>

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On Mon, Oct 16, 2006 at 12:15:13PM +0200, Jon Otterholm wrote:
> Hi.
> 
> I have a bridge setup with a number of vlan IF's as members. After a 
> while traffic destined for one member IF are sent to all member IF's.
> 
> From man if_bridge:
> 
>     A bridge works like a hub, forwarding traffic from one interface to
>     another.  Multicast and broadcast packets are always forwarded to all
>     interfaces that are part of the bridge.  For unicast traffic, the 
> bridge
>     learns which MAC addresses are associated with which interfaces and 
> will
>     forward the traffic selectively.
> 
> Has anyone else got this problem? How do I debug this?
> 

You should run 'ifconfig bridge0 addr' to print out the forwarding
table, check if the mac address is listed on the correct port.


cheers,
Andrew



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