3 ms·

This seems unlikely, as 6to4 was deprecated in 2015: https://datatracker.ietf.org/doc/html/rfc7526 https://datatracker.ietf.org/doc/html/rfc7526

• NoZebra120vClip 3y ago
  I couldn't believe it either, but using Chome on ChromeOS 114, updated yesterday, all the public sites report that I am connecting from 2002::/16
  • p1mrx 3y ago
    Interesting. It's only possible to terminate 2002::/16 using a public IPv4 address, so if you're behind a NAT router, then the router itself must be running 6to4.
    • NoZebra120vClip 3y ago
      Aha! Thanks for the hint: I recently had to reconfigure my router from factory settings. The IPv6 configuration, sure enough, was kicked into 6to4 mode. I set it to "Auto Config" and now I've got end-to-end IPv6 connectivity with, look Ma, no NAT! Thank you, p1mrx!