[131004] in North American Network Operators' Group
Re: Definitive Guide to IPv6 adoption
daemon@ATHENA.MIT.EDU (Owen DeLong)
Tue Oct 19 05:24:24 2010
From: Owen DeLong <owen@delong.com>
In-Reply-To: <4CBD014D.8060408@dougbarton.us>
Date: Tue, 19 Oct 2010 02:23:37 -0700
To: Doug Barton <dougb@dougbarton.us>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Oct 18, 2010, at 7:24 PM, Doug Barton wrote:
> On 10/18/2010 5:16 PM, Robert E. Seastrom wrote:
>>=20
>> sthaug@nethelp.no writes:
>>=20
>>> 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.
>>>=20
>>> We're doing /56 for residential users, and have no plans to change
>>> this.
>>=20
>> 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.
>=20
> I'm confused. The "hand out /48s everywhere" crowd keeps saying that =
we need to do that because we haven't yet anticipated everything that =
end users might want to do with a /48 on their CPE. On the wider issue =
of "we don't yet understand everything that can be done with the space" =
I think we're in agreement. However my conclusion is that "therefore we =
should be careful to preserve the maximum flexibility possible."
>=20
Right... Giving /48s to end users for native IPv6 deployments still =
preserves 99.9975% (or more) of the IPv6 space
while not stifling innovation on the CPE side. Maximum flexibility is =
preserved on both sides of the ISP/customer
boundary.
Giving customers less doesn't really increase meaningful flexibility for =
the providers, it just keeps more address space
on the shelf gathering dust.
> After we have some operational experience with IPv6 we will be in a =
position to make better decisions; but we have to GET operational =
experience first. Grousing about lack of adherence to holy writ in that =
deployment doesn't help anybody.
>=20
Some of us actually have some operational experience with IPv6.
As such, I'm not grousing about holy writ, I'm talking about real =
consequences of real actions in real world implementations.
Owen
