Definitive Guide to IPv6 adoption

Tue Oct 19 09:16:58 UTC 2010

On Oct 18, 2010, at 5:45 PM, Marshall Eubanks wrote:

> 
> On Oct 18, 2010, at 8:16 PM, Robert E. Seastrom wrote:
> 
>> 
>> sthaug at nethelp.no writes:
>> 
>>> I still haven't seen any good argument for why residential users need
>>> /48s. No, I don't think "that makes all the address assignments the
>>> same size" is a particularly relevant or convincing argument.
>>> 
>>> We're doing /56 for residential users, and have no plans to change
>>> this.
>> 
>> If we were to give a /48 to every human on the face of the planet, we
>> would use about .000025 of the total available IPv6 address space.
>> 
>> You are to be commended for your leadership in conserving space.  Our
>> children will surely be grateful that thanks to your efforts they have
>> 99.99999% of IPv6 space left to work with rather than the paltry
>> 99.9975% that might have been their inheritance were it not for your
>> efforts.  Bravo!
>> 
> 
> It makes a bigger difference if everyone starts using 6RD - to give out a /48 effectively 
> requires a  /16, and the number of /16s is by no means approximately infinite. 
> 
That is why the AC chose to allow for a /56 per end-site in the transitional technology
policy (6rd is a transitional technology) and why we call for them to be issued from
a distinct prefix separate from native IPv6 deployments.

In this way, 6rd can be deployed sooner rather than later, but, we have the ability to
move forward to a cleaner native IPv6 deployment and deprecate 6rd when it is
no longer needed.

Owen