[Mark McLeod]

One of the easiest ways to run multiple robots simultaneously, all with the same team number, is to set them all up for solitary wireless operation as would be normal. Then just give each robot's DLink a different unique SSID, and connect each laptop wirelessly to the appropriate paired Robot/Dlink.

Turn off the laptop connecting automatically to DLinks with your team number.
That puts everyone on separate networks, and fully separated networks can have common IP's just like your neighbor's home network probably uses the same IP settings that your house does.

DLink's won't talk to laptops unless they have been connected, and there is no conflict with duplicate robot numbers unless they are on the same network.