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Date: Fri, 20 Mar 2009 13:42:10 -0700
From: Julian Elischer <julian@elischer.org>
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To: Stefan Bethke <stb@lassitu.de>
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Cc: freebsd-net@freebsd.org, Andrew Thompson <thompsa@freebsd.org>
Subject: Re: if_bridge and .1q VLANs
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Stefan Bethke wrote:
> Hi there,
> 
> it appears if_bridge bridges tagged frames alongside non-tagged frames.  
> Is there a way to either stop if_bridge from doing so, or otherwise 
> filtering out the tagged frames?
> 
> My trunk currently has one untagged network and two tagged VLANs on it 
> (the untagged one being the main LAN), and I'm bridging the LAN to 
> another site via OpenVPN.  But I'd rather not bridge the other two 
> VLANs, if at all possible.
> 
> I can switch the untagged VLAN to tagged on the switch, if that turns 
> out to be the easiest option, and bridge between tap and another vlan 
> interface.

I don't know how much this helps but you may be able to plumb
something up using the netgraph vlan and bridge nodes.
I have not used the vlan nodes so I do not talk from experience..

> 
> 
> Thanks,
> Stefan
>