[CentOS] New firewall, need mac changed

Sat Apr 19 19:02:30 UTC 2008
Joseph L. Casale <jcasale at ActiveNetwerx.com>

I have read a few ways to do this, but not 100% sure.
I need the interfaces reliably associated to the hardware (there are more than one), so the ifcfg-ethn has the mac address in it. I need to match the mac address of an old router that is about to be removed so I need not change any dns related config.