For kernel versions >= 3.8, you need to use the dkms module from the package associated with the kernel - for example:
sudo apt-get install openvswitch-datapath-lts-raring-dkms The default 1.4.6 version of openvswitch datapath is not compatible with the 3.8 kernel. ** Changed in: openvswitch (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openvswitch in Ubuntu. https://bugs.launchpad.net/bugs/1325091 Title: openvswitch-datapath-dkms 1.4.6-0ubuntu1.12.04.2: openvswitch kernel module failed to build To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1325091/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs