Yoav Nir wrote: > You'd think they would have learned by now. > > "A native IPv6 network will restore end-to-end connectivity > with a vastly expanded address space..." That's true but the problem is that the end to end connectivity is utterly lost during the transition from IPv4 to IPv6 network (dual stacking was abandoned). On the other hand, IPv4 address space extended by PR-IP (port restricted IP such as Address+Port, end to end NAT and port enhanced ARP) is large enough and the end to end connectivity is always kept. Masataka Ohta _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf