Here’s a quick tip to start the day!  

I recently found when duplicating a virtual Linux machine using Windows Hyper-v that when the duplicated machine booted, the Ethernet port was disabled?

Watching the boot sequence I saw the following:

Device seth0 has different MAC address than expected, ignoring.

As the new machine has a unique MAC address, the Linux install doesn’t like this and automatically disables the interface!

There’s a quick fix however – you need to edit the file:


In this file, change the “HWADDR” entry to match the new MAC address of the virtual network card (you can find this under the settings for the VM).

Finally, restart networking by running :

/etc/init.d/network restart