Lu Heng wrote ...
So, US are using 40% of total world IP supply for it's 10% of world internet user base, while asian for years, is using about 10% of world IP address to supply 40% of internet user base.
In which, tells us that if US can free us even half of it's IP address space, that will supply us maybe another decades.
You make a *very* incorrect assumption: That the main use of IP addresses is "access" to the internet - completely ignoring all the devices/systems/networks/etc that hold those services you are accessing - the bulk of which are in the EU and US. IPv6 is not a new idea. Dual-Stacking is not a new idea. IMHO if you're still deploying systems and devices that only work v4 your business is about to die - attaching a bit of NAT based life-support isn't going to save it. Rob