$ uname -a Linux andyba 3.2.0-40-generic #64-Ubuntu SMP Mon Mar 25 21:22:10 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux $ lspci | grep Ethernet 00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 05) In previous kernels, this device was supported. In this kernel version this device does not provide Internet.
I'm sorry, I think the proper place to open this issue is in Ubuntu launchpad. I will close this one.