[Vtun-Users] limited bridge?

[Simon T. <th...@op...>]

Is it possible to do a limited IP or Ethernet bridge, where data from only
a specified IP port or a specified MAC address is bridged to the other
side?  I have a Linux box on a private LAN behind a XyXEL DSL/NAT
firewall.  I also have my XBox back here ;) and I'm investigating
tunneling ether traffic from it to a friend with a similar setup. 

I can't do a full tunnel, as I understand it, because since the linux box
is only connected to the segment that I want to bridge, I'd get a runaway
condition.  

Any problems with this idea?  If the limited filtering by MAC isn't
implemented, I might do that myself.

Cheers,

Simon.