Don't forget about MAP-T which does IPv4 NAT over IPv6. The client is IPv4, the ISP is IPv6, and server is IPv4. This is still CGNAT but IPv6 is provided. But m

Don't forget about MAP-T which does IPv4 NAT over IPv6. The client is IPv4, the ISP is IPv6, and server is IPv4. This is still CGNAT but IPv6 is provided. But means ISP uses IPv6 internally. The problem for NAT64 in general use is that there is lots of IPv4-only software. NAT64 is great for business networks where control the software, but home users are going to try to use their Xbox 360 or Windows game from the 90s.