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Anubis does this. Happy Eyeballs (https://en.wikipedia.org/wiki/Happy_Eyeballs https://en.wikipedia.org/wiki/Happy_Eyeballs), IPv6 privacy extensions (https://o
by xena 27d ago
Anubis does this. Happy Eyeballs (https://en.wikipedia.org/wiki/Happy_Eyeballs https://en.wikipedia.org/wiki/Happy_Eyeballs), IPv6 privacy extensions (https://oneuptime.com/blog/post/2026-01-15-ipv6-privacy-extensions-security/view https://oneuptime.com/blog/post/2026-01-15-ipv6-privacy-exte...), and devices migrating between home and mobile IP addresses as the person moves have all caused issues with this. Fixing this is hard, but I have been trying.
- wolrah 26d agoHappy Eyeballs and switching to/from mobile are definitely hard problems to deal with in a privacy-friendly way, but I don't think IPv6 privacy extensions should really matter here. Just treat a /64 the same way you'd treat a /32 in IPv6-land. It may represent multiple users, but they're all sharing the same internet connection which is as much as the global internet really wants to tell you. Whatever's on the user-controlled side of the address is of course untrustworthy anyways.