I know how to use 'ip' to set up a static route, e.g.:
ip route add 192.168.128.0/17 via 40.53.24.3 dev eth0
But if you reboot or restart network, you loose this. Thus you have to make it persistant. I found:
http://www.cyberciti.biz/tips/configuring-static-routes-in-debian-or-red-hat...
where it says to add to ifcfg-eth0:
192.168.128.0/17 via 40.53.24.3
But this did not work after the interface was restarted. So what is the proper to set up persistant static routes?