After a couple of reboots ( too "cycle" trough the nics ) my configuration was correct, my etc/sysconfig/network-scripts/ifcfg-* files where all in order. ( with correct mac address )
But this file dont excist on any of my nodes: /etc/udev/rules.d/70-persistent-net.rules

So i generated it with :
echo add > /sys/class/net/eth0/uevent
echo add > /sys/class/net/eth1/uevent
echo add > /sys/class/net/eth2/uevent

Reboot no difference. Tried: mount -o rw,remount / before all the changes also on my second run..
But the change is not persistent. Anything special i need to do to keep this file? /etc/udev/rules.d/70-persistent-net.rules

Thanks for your time :)

-Espen