>I'm talking about when you have CLAT in the router. Maybe we can have all discussion about CLAT on the router under this subject? Is there any experience with this? Did previous IETF meetings have an experimental SSID with this setup? I'm certainly not opposed to having the router do some sort of tunneling. Whether it is CLAT+NAT64 or MAP-E, MAP-T. DS-Lite or what have you. As long it provides hosts with the illusion of CGN IPv4-NAT then that's probably the best you can expect in most places.