CentOS - Nov 2005 - Putting nat routing into place permanently?

What's the canonical way to do this in CentOS/RHEL? I know how to do it
from the command line, but how to do I make a NAT route permanent?

Preston

> What's the canonical way to do this in CentOS/RHEL? I know how to do it
> from the command line, but how to do I make a NAT route permanent?
rc.local ?