> If I got your problem right then I can advise you a possible 
> solution - in RHEL5 kernel we have a functionality called 
> "via_phys_dev" (triggered by BRCTL_SET_VIA_ORIG_DEV ioctl). 
> This forces kernel to work with original interface ethX 
> (first added to bridge) and pass the traffic to it. This 
> allows to add ethX to bridge w/o need to propogate it's 
> netfilter rules and other settings to brX.

Looking at the openvz-2.6.24 sources that via_phys_dev is
already there. I just wonder how to use it:

brctl addbr vmbr0
echo 1 > /sys/class/net/vmbr0/bridge/via_phys_dev
brctl addif eth0

But looks like ip setting of eth0 gets lost (or what is 
meant by 'and other settings'?). Maybe you have further info
How to use that feature?

- Dietmar