Never mind I figured it out.
man ifcfg explains that there is an option POST_UP_SCRIPT. So in /etc/sysconfig/network/ifcfg-eth3 I added:
Code:
POST_UP_SCRIPT='/etc/sysconfig/network/scripts/ifup-route.eth3'
I also added:
Code:
POST_DOWN_SCRIPT='/etc/sysconfig/network/scripts/ifdown-route.eth3'
There is still some cleanup I need to do thought it looks like the " ip rule add from" is running 2x's.