Hello, Got a question for the networking gurus out there. Using only linux 2.2.x and the utils that come with it, if I have a MAC address and nothing else, how can I find out what IP address (if any) that MAC is associated with? Currently I can do this by looking in our router, but that's slow and cumbersome I don't want to ping everything to build up the arp table either. I need a utility that will do request the IP from the MAC address. Any takers? Mike Neuliep mike@illiana.net