Masataka Ohta wrote: > On the other hand, with NAT, which can be end to end transparent, > IPv4 capable servers can be reached by IPv4 only clients, optionaly > with end to end transparency. Nat is not end to end 'transparent' no matter how you define it, and will break all the stuff you claim works when it is operated by a third party. Nat in the core will be nothing like nat at the edge, and all the assumptions people make about how wonderful life would be with 'just more nat' are going to end up wondering how to get rid of the CGN mess once it gets deployed. Be careful what you wish for, it just might come true... Tony _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf