:: Now think about scaling. Yes :: If the population doubles, we're now down to four spare /3s. :: If that doubled population doubles the number of devices, :: we're down to two spare /3s. If the population doubles :: again, there will be no civilization left, let alone an :: Internet. Etc. So realistically, the current address space :: allocation policies can handle a doubling of the planet's :: population, with each person having a quarter of a million :: addressable nodes. Each node having its own /64 to address :: individual endpoints within whatever that 'node' represents. Space: the final IP frontier These are the voyages of the range of IPv6 Its many-year mission: to explore strange new device implementations; to seek out new planet-covering nano-device applications and new ad-hoc networking technologies; to boldly go via DTN where no internet segment has gone before. <cue space-like music> :: Isn't this the utopia we've been seeking out? I like that one! :-) scott