Why do 2 qubes have the same Mac Address?

Hi,
I setup a few windows virtual machines while I learn qubes. I noticed two qubes have the same physical address under ipconfig/all. The other is different. I dont remember doing anything specific to change the mac. How come my new qube is duplicating the previous vm’s address?. Stuff like “ipv4” “ipv6 address” these are all unique. Its just the mac address thats duplicated. I assumed qubes randomized the ethernet adapter mac as my second vm was different than the first. But now my latest vm has duplicated the previous vm’s mac. Why is this?

I’ve reformulated the title in the hopes it get some more attention. @Slayer feel free to edit it if you feel it misrepresents your problem.

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Thank you very much deeplow.

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