Does qubes create a virtual ethernet adapter for a VM?

Im tryna make a unique mac address for every windows vm I create. So far only 1 windows vm has a unique mac address. The rest seem to duplicate a different address. Why did my first vm get a different mac ethernat adapter address than the rest?. I installed nord vpn on the first vm. The rest i didnt. Is it nord vpn changing the mac address???. Is every ethernet adapter that qubes create reading the pc hardware mac or creating its own. Im very confused and its delaying my progress lol.

The default MAC address is 00:16:3e:5e:6c:00 for every qube. You can change your VM MAC address with qvm-prefs in dom0 terminal:
qvm-prefs yourvmname mac XX:XX:XX:XX:XX:XX