On Thu, 12 Aug 2021 15:38:27 +0000 "Templin (US), Fred L" <Fred.L.Templin@xxxxxxxxxx> wrote: > Hi, RFC3068 set aside the prefix 192.88.99.0/24 as the 6to4 Relay Anycast prefix, and > then RFC7526 came along and deprecated that use. I would like to reclaim the prefix > and use it for a different anycasting purpose - mostly within IPv4 networks that would > not be places where one would ordinarily find a 6to4 Relay router. Hi Fred, At least two major networks still announce and provide service on this prefix and the .1 address in particular. Specifically HE.net and SURFnet. The latter told me awhile back they were considering taking it down and HE said they still see a fair bit of use with it. I happened to have performed some research-related work to the transition mechanisms[1], this one included, and I think it is time for them to go away, but I'd recommend coordinating with the two networks mentioned above to ensure they are on board. I can try to help coordinate with that if you'd like. John [1] John Kristoff, Mohammad Ghasemisharif, Chris Kanich, Jason Polakis, Plight at the End of the Tunnel: Legacy IPv6 Transition Mechanisms in the Wild, in Proceedings of the Passive and Active Measurement Conference (PAM), 2021.
