If he's using Road Runner, all he'll need to do is reset his cable modem's connection (by cycling its power or disconnecting it from the coaxial cable) and it should automatically send the new MAC ...

I am setting up a Linux box using Clarkconnect as a firewall/router and I am having trouble using my static IP. On my Linksys I have to clone the MAC address so that I get the same IP every time. I ...