The estimated mass of our galaxy is around 6x10^42Kg. The mass of earth is a little less than 6x10^24Kg.
2^128 is around 3.4x10^38. So in a flat address space we have about one IPV6 address for every 20,000Kg in the galaxy or for every 20 picograms in the earth... One would hope it would last for a while :) On Mon, Oct 5, 2009 at 5:32 PM, <[email protected]> wrote: > > considered top posting to irritate a few folks, decided not to. > > > On Mon, Oct 05, 2009 at 04:20:44PM -0500, Chris Owen wrote: > > On Oct 5, 2009, at 1:43 PM, Wayne E. Bouchard wrote: > > > > >Whenever you declare something to be "inexhasutable" all you do is > > >increase demand. Eventually you reach a point where you realize that > > >there is, in fact, a limit to the inexhaustable resource. > > > > This is where I think there is a major disconnect on IPv6. The size > > of the pool is just so large that people just can't wrap their heads > > around it. > > > > 2^128 is enough space for every man, woman and child on the planet to > > have around 4 billion /64s to themselves. Even if we assume everyone > > might possibly need say 10 /64s per person that still means we are > > covered until the population hits around 2,600,000,000,000,000,000. > > > > Chris > > > > here, you expose a hidebound bias to 20th century networking. > please remember that - with few exceptions - people network > at a very different level than machines. people don't need > IP addresses - computing nodes that want to communicate do. > > Just for grins, put a unique IPv6 address in every active RFID > tag. ... and remember that there are RFID printers that can > put 18 tags on a single A4 sheet. Numbers will become disposible, > like starbucks coffee cups and MCD's bigmac containers. > > --bill > >
