Michael Richardson wrote: > The major *security* advantage of IPv6 is that it removes 90% of > complexity of IPv4 networks that results from layers of NAT, and then > series of port-forwards through them. See page 13 of the slide of Gont stating: Ironically, NAT66 is one of the most frequently-asked IPv6 features As effective address space enhancement by port restricted IP keeps the end to end transparency for IPsec, there is no reason to have IPv6 only for the 10 times more complexity of mixed IPv4/6 networks connected by legacy NAT. Masataka Ohta _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf