Well, yes, the idea of MAC addresses is that they're supposed to be universally unique. However, in practice there may be a few devices with the same MAC address either because of a collision in the way they're assigned or because the devices are meant to have new MAC addresses assigned when they're programmed but the person doing the programming didn't bother. If they're not on the same layer 2 network then nobody would notice. It can, I suppose, be thought of a little like LAN's behind a NAT being able to all use 192.168. address range.

You bought a license that's tied to a single computer. Spoofing MAC addresses to use it on more than one is absolutely a violation of the terms of the license. Asking how to do it is a violation of the rules of this forum.

I've reported this thread.

Have you considered the possibility of altering your udev rules?
I replaced an ethernet card once, which caused the interface to change from eth0 to eth1
Some commercial software got upset about this, so I was able to change interface name back.

However, I suggest you search 'Duck Duck Go' with the search term 'spoofing mac address linux'.

I think the issue here is how does one network two or more devices with the same MAC address once that has been done?

Quite right - sorry about that.
Please my previous post.

Thread has been closed due to potential violations against software licensing agreements and violation against LQ rules.