From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Sat, 21 Apr 2007 17:20:31 -0600
From: Cameron Schaus <cam@schaus.ca>
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Subject: Re: [Bridge] linux bridge does not bridge bpdu packets
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Roman Glebov wrote:

>The problem is : all stp packets which come to one side of the Bridge are
>not forwarded to the other side. Which distrubs stp when this device is
>put inbetween of two stp capable devices.
>It forwards all traffik through it.
>Normal udp/tcp traffik is forwarded.
>
>I switched stp on it "off" so it does not participate in Spanning tree
>communications.
>  
>
I don't think you are doing anything wrong.  I asked this question a 
while back, and was told that this behaviour conforms to the 802 spec.
Please see: 
https://lists.linux-foundation.org/pipermail/bridge/2006-December/005169.html

Cam