Phantom DHCP

Laptops who are not constantly connected to our LAN are getting an IP address not defined in our DHCP scope whenever they try to re-connect. This happen also for new PCs. The IP address is 192.168.2.x with a gateway of 192.168.2.1. To fix, we have to disable/enable several times and use the “repair” options on XP.

It seems that there is another DHCP service giving IP addresses. I checked all the servers and only one is running. The IP address in question is not being use.