okay, i have seen the instructions on how to create VLANs and that would be a first step in what i want to do. but is there any way in IPTables or in some other tool in the DD-WRT firmware to create a spanning/mirror port? i want to duplicate all traffic coming in on the WAN port to one of the switch ports. i know that in packetfilter there is a dup-to command that you can use to duplicate the traffic caught by a rule, but i haven't found anything similar in iptables. can anyone help?