You won't have enough addresses for Dark Matter, Neutrinos, etc. Atoms wind up using up about 63 bits (2^10^82) based on the current SWAG. The missing mass is 84% of the universe.
> -----Original Message----- > From: Randy Bush [mailto:ra...@psg.com] > Sent: Monday, September 17, 2012 8:30 PM > To: John Levine > Cc: nanog@nanog.org > Subject: Re: IPv6 Ignorance > > > In technology, not much. But I'd be pretty surprised if the laws of > > arithmetic were to change, or if we were to find it useful to assign > > IP addresses to objects smaller than a single atom. > > we assign them /64s