Eric, There are 35,184,372,088,832 48-bit prefixes available under the current IPv6 allocation scheme. I think that allows for a rather significant increase in the world population before we run out, or have to use the other 87.5% of the total address space.
Address space is certainly no argument for private addresses. (Before anyone starts a side track, the fact that we have enough space doesn't automatically provide an allocation scheme or routeability, but those are separate issues.) Brian EricLKlein wrote: > > > > Done this way we will be defingin IPv7 real quick, as the unused > > > addresses > > > will add up very fast. > > > > There are a _lot_ of IPv6 routing prefixes, namely 281,474,976,710,656 > > (assuming every allocation is a /48 as is the current plan (last I > > heard)). Right now, there are about 120K routing prefixes in the > > Internet. I think IPv7 is a ways off. > > > > Not if we are assigning 200 addresses to each user (never to be reclaimed in > many cases) They touted IPv6 as 1 address per person in the world for years > to come. Look at the future. > > You will need (assumes modern western culture person other cultures may have > different requirements as defined by B. Gates): > 1 address per node on your computer (all must be registered as local > addresses are going away according to the list) > 1 address for your work computer + printer + other "smart" device > 1 address per hand held (Palm, IPaq, etc) > 1 address per cellular phone > 1 address per regular phone (possibly 1 per physical extension in your > house - but I think that can be avoided) > 1 address per appliance on your network - Refrigerator, dishwasher, air > conditioner, alarm system, car radio, etc (again all must be registered as > above) > and more address as they are used. > > This will make it a case of the person in 2000 who has 15 phone numbers for > their family of 4 changing to the person in 2005 who had 200 IP addresses > (or names that DNS to addresses) for their house plus 50 addresses for that > same family of 4. > > Some sort of local addresses space is a must. -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
