From what i've heard, carrier grade nat is stupidly expensive and rather hard to scale nicely at reasonable speeds. It would be fairly easy to implement say ip

From what i've heard, carrier grade nat is stupidly expensive and rather hard to scale nicely at reasonable speeds. It would be fairly easy to implement say ipv6 in china, as it would be a closed system with everybody getting new gear and everybody in the same "we have no ips" boat. To be honest, as the internet ecosystem in places such as china is mostly closed, I'd be surprised if they didn't go ipv6 only internally well before the rest of the world switches (what's the point in having a v4 address if everything you care about is on native v6 and you have a 64 gateway for everything that isn't). Going to be interesting to see.