Login with root.
VI /etc/udev/rules.d/70-persistent-net.rules
edit the first line with the correct mac address for ETH0.
Delete all the other lines for ETH1 etc..
Reboot
Done
Login with root.
VI /etc/udev/rules.d/70-persistent-net.rules
edit the first line with the correct mac address for ETH0.
Delete all the other lines for ETH1 etc..
Reboot
Done