Question: Today I was cloning a couple of images of Ubuntu to further expand the use of Ubuntu over the company but just noticed that all cloned PCs have the same Teamviewer ID. I followed teamviewer forum suggestion about purging teamviewer, removing the .config/teamviewer9 folder and even the /opt/teamviewer one with no luck. The ID stays the same even after rebooting or waiting for about 30 mins before installing teamviewer again.

How can I reset/change the Teamviewer ID in Ubuntu for all the cloned computers. Right now I am using the latest version of Teamviewer (Version 9).

Answer: 
Try to change the **MAC Addresses** for Cloned PCs

TeamViewer ID depends on it for sure.
I have found the simplest way to change the ID is to change the MAC address of the NIC. This assumes the cloned machine doesn't require the same MAC address. When the server is restarted