Why don't we run it the opposite way: -IPv6 by default, else: -Legacy: just run IPv4 with some kind of NAT.
If the answer to that question isn't obvious, I don't think I can help. Regards, John Levine, johnl@xxxxxxxx, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. http://jl.ly _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf