This morning, I upgraded from Kubuntu 13.04 to Kubuntu 13.10, and I lost my internet connection after the upgrade. The internet connection is ethernet to a DSL Modem. I know there is nothing wrong with the internet as everything else is working.
The computer is a desktop PC and only connects to the internet via a DSL Modem using an ethernet cable.
The error message I am getting is IP Configuration was unavailable.
Can someone explain how to fix this?