Hrm, but the insistence is more "NAT should not be a practical requirement in a pure IPv6 network", not "No NAT ever for any reason". NAT-based compatibility s

Hrm, but the insistence is more "NAT should not be a practical requirement in a pure IPv6 network", not "No NAT ever for any reason". NAT-based compatibility strategies are widely deployed in the real world (most cell carriers and Google's IPv6-mostly corporate network use NAT to allow communication with the IPv4 world from IPv6 only devices).