I work at a school and despite running DHCP on our main router with only a few static ip's set for printers, we are constantly getting the, "there is an ip conflict with another system on the network" error messages. I was told to try to use wireshark to try to figure out if there is another unknown router or device running DHCP on the network that might be causing this problem. I've installed wireshark, but I've only used the program once or twice and I have no idea how to get this information. Can anyone shed some light on this? Can anyone suggest what else I can do to figure out these ip conflict messages?