I tried to run a similar setup and found that Debian/Ubuntu's 'network-manager' process makes a really horrific mess of managing 2 interfaces. I ripped it out of Debian and used file entries in /etc/network/interfaces and /etc/resolv.conf I have no idea if Ubuntu will spit it's brain out if you try that on 12.04 as it's ver dependent on it in the GUI. -- Mark Benson http://markbenson.org/blog http://twitter.com/MDBenson On 28 Aug 2012, at 13:37, Mark Wickens <mark at wickensonline.co.uk> wrote: I think I've found it. My HP Microserver running Ubuntu 12.04 has two network cards in: eth0 and eth2.