> V6 affords enough address space that IPv6 NAT can do 1:1 IP:IP mapping between internal and external. That's the very thing those who consider IPv4 NAT to be

> V6 affords enough address space that IPv6 NAT can do 1:1 IP:IP mapping between internal and external. That's the very thing those who consider IPv4 NAT to be a desirable feature don't want.