Device eth0 has different MAC address than expected, ignoring.

After testing the Instant Recovery of a Linux web server. See my previous post about this Recovery process. The Linux web server has no network connection. I quick look at ifconfig only showed the loopback adapter. So I tried ifup eth0 and run into to following error:

This can simply be fixed by changing the MAC address. Open the Virtual Machine Properties and write down the MAC Address:

open the /etc/sysconfig/network-scripts/ifcfg-eth0 in your favorite editor and change the HWADDR to the new MAC address and save the file.

The final step is to restart networking via /etc/init.d/network restart.