[1] https://tools.ietf.org/html/draft-peabody-dispatch-new-uuid-... [2] http://gh.peabody.io/uuidv6/
Also, this sounds like a non-starter for UUID v6:
"Like version 1 UUIDs, version 6 UUIDs use a MAC address from a local hardware network interface."
https://uuid.ramsey.dev/en/latest/nonstandard/version6.html