[182315] in North American Network Operators' Group
Re: Dual stack IPv6 for IPv4 depletion
daemon@ATHENA.MIT.EDU (Lyndon Nerenberg)
Tue Jul 14 22:19:09 2015
X-Original-To: nanog@nanog.org
From: Lyndon Nerenberg <lyndon@orthanc.ca>
In-Reply-To: <01c401d0be66$ce0b40d0$6a21c270$@tndh.net>
Date: Tue, 14 Jul 2015 19:19:31 -0700
To: "North American Network Operators' Group" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
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On Jul 14, 2015, at 11:56 AM, Tony Hain <alh-ietf@tndh.net> wrote:
> IPv6 is not the last protocol known to mankind. IF it burns out in =
400-500
> years, something will have gone terribly wrong, because newer ideas =
about
> networking will have been squashed along the way. 64 bits for both =
hosts and
> routing was over 3 orders of magnitude more than sufficient to meet =
the
> design goals for the IPv4 replacement, but in the context of the =
dot-com
> bubble there was a vast outcry from the ops community that it would be
> insufficient for the needs of routing. So the entire 64 bits of the =
original
> proposal was given to routing, and the IETF spent another year arguing =
about
> how many bits more to add for hosts. Now, post bubble burst, we are =
left
> with 32,768x the already more than sufficient number of routing =
prefixes,
> but "IPv4-think" conservation believes we still need to be extremely
> conservative about allocations.
If you look at how the IoT model is evolving, the entire host+service =
(i.e. IP address + port number) model is rapidly disintegrating. =
Services are the end-points now. They need to be individually =
addressable, since they really have no affinity to physical hardware in =
the sense we currently think of "hosts," with IP and MAC addresses. =
Host hardware is fungible; services are mobile.
The IPv6 address space conservatives are missing the entire point that =
IPv6, as a global addressing scheme, will collapse in the next couple of =
decades. Host+port endpoint identifiers are already done. We just =
haven't noticed yet.
--lyndon
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