>QinQ maybe, or vlan mapping? Just a wild guess. Nothing funky like that going on. It's a plain 3560 switch running in L2 mode with 2 SVIs where one is a temporary one created just to reach the switch to set it up. Seen on two different switches today, though. -- Regards Christian Bering IP engineer, nianet a/s Phone: (+45) 7020 8730