Thanks Anders:
My motherboard got replaced the other day. Because I have an onboard network card, the OS detects it as a new card (new MAC). It results in on my machine as a eth3 instead of eth0.
To fix this:
edit /etc/sysconfig/network/config
change
FORCE_PERSISTENT_NAMES=YES
to no
or
edit /etc/udev/rules.d/30-net_persistent_names.rules
This file holds your nic info on openSUSE and SUSE Linux.
coolsolution article: renaming your nic
Google: change NIC SUSE, change network opensuse, change network interface suse, change ethernet, eth1, eth0 wlan suse opensuse, change wlan1 to wlan0, rename nic, rename network device, udev: rename network interface wlan0 to wlan1
