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Do you know MAC Address - Whonix and MAC Address - Kicksecure already?
Truly random MAC is problematic indeed, see: Random MAC Addresses
Tails developers have a good design paper where they also exactly discuss that issue and solutions:
https://tails.boum.org/contribute/design/MAC_address/
See also:
- MAC Address Randomization: Not as Random as You Think
- Your MAC Address Randomization attempts are futile!
- Dev/MAC - Whonix
- MAC randomization breaks root server and VirtualBox DHCP / IPv6PrivacyExtensions might be problematic · Issue #184 · Kicksecure/security-misc · GitHub
- MAC Randomization Is Flawed: Proposed New Solution