Re: [SLE] Lost network connection -- how to diagnose?

1. The Ethernet hardware failed some time during the night.

Try mii-tool or ethtool to check the hardware but I doubt that you have a hardware problem.

3. There's a software problem induced by the online update.

Try compiling the driver for your network card from source with the new kernel. Don't install it just rmmod the current one and insmod the one you compiled and see if your network is working. Brana