Internet Services from KKoncepts

One of the things I do quite often is make a clone of a Ubuntu server vdi image that I made in the past so that I can do some testing on a fully setup Ubuntu server image. When the testing is over, I would normally delete this image. Using this clone image, I make a new Virtual Box machine with a bridge network - as I would normally want to access the server from my host machine as a server.
One problem that I alway encounter is that the new bridge adaptor - it is new as it has a different MAC address - would be interprited by Ubuntu as a new network card and assigned to eth1 instead of eth0. This completely breaks the static network I have setup in /etc/network/interface. So I have no network except localhost. eth0 no longer exist and so it not working. eth1 is not configured - so it is not working.
I would prefer to keep my network interface as eth0 on this virtual machine and not have different ethx on different Virtualbox Ubuntu servers.
The solution involves editing /etc/udev/rules.d/70-persistent-net.rules
There you will find (in my case), 2 udev rules - one for the old virtual network card (no longer in existance) and another for the new virtual network card:

1. Delete the udev rule line for the old network card
2. Edit the udev rule for the new network card and change NAME="eth1" to NAME="eth0"

 
Restart the network (or reboot) and new virtual network card is now eth0