nanog mailing list archives
Re: IPv6 end user addressing
From: Brian E Carpenter <brian.e.carpenter () gmail com>
Date: Thu, 11 Aug 2011 13:52:10 +1200
On 2011-08-11 12:45, james machado wrote:
what is the life expectancy of IPv6? It won't live forever and we can't reasonably expect it too. I understand we don't want run out of addresses in the next 10-40 years but what about 100? 200? 300? We will run out and our decedents will go through re-numbering again. The question becomes what is the life expectancy of IPv6 and does the allocation plan make a reasonable attempt to run out of addresses around the end of the expected life of IPv6.
Well, we know that the human population will stabilise somewhere below ten billion by around 2050. The current unicast space provides for about 15 trillion /48s. Let's assume that the RIRs and ISPs retain their current level of engineering common sense - i.e. the address space will begin to be really full when there are about 25% of those /48s being routed... that makes 3.75 trillion /48s routed for ten billion people, or 375 /48s per man, woman and child. (Or about 25 million /64s if you prefer.) At that point, IANA would have to release unicast space other than 2000::/3 and we could start again with a new allocation policy. I am *really* not worried about this. Other stuff, such as BGP4, will break irrevocably long before this. Brian
Current thread:
- Re: IPv6 end user addressing, (continued)
- Re: IPv6 end user addressing Greg Ihnen (Aug 11)
- Re: IPv6 end user addressing mikea (Aug 12)
- Re: IPv6 end user addressing Joe Greco (Aug 12)
- Re: IPv6 end user addressing Carlos Martinez-Cagnazzo (Aug 13)
- Re: IPv6 end user addressing Matthew Moyle-Croft (Aug 14)
- Re: IPv6 end user addressing Chris Adams (Aug 11)
- Re: IPv6 end user addressing David Sparro (Aug 12)
- Re: IPv6 end user addressing Michael Hare (Aug 10)
- Re: IPv6 end user addressing james machado (Aug 10)
- Re: IPv6 end user addressing Mark Andrews (Aug 10)
- Re: IPv6 end user addressing Brian E Carpenter (Aug 10)
- Re: IPv6 end user addressing Joel Jaeggli (Aug 10)
- Re: IPv6 end user addressing Owen DeLong (Aug 11)
- Re: IPv6 end user addressing Eugen Leitl (Aug 11)
- Re: IPv6 end user addressing Brian E Carpenter (Aug 11)
- Re: IPv6 end user addressing Mark Newton (Aug 10)
- Re: IPv6 end user addressing Cameron Byrne (Aug 10)
- Re: IPv6 end user addressing Mark Newton (Aug 10)
- Re: IPv6 end user addressing Mark Newton (Aug 10)
- Re: IPv6 end user addressing Owen DeLong (Aug 10)
- Re: IPv6 end user addressing Mark Newton (Aug 10)