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Re: draft-bourbaki-6man-classless-ipv6-00

james woodyatt <jhw@google.com> Wed, 14 June 2017 18:09 UTC

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From: james woodyatt <jhw@google.com>
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Subject: Re: draft-bourbaki-6man-classless-ipv6-00
Date: Wed, 14 Jun 2017 11:09:58 -0700
References: <E02C4C99-155A-4358-A845-F00F8BB071C1@employees.org> <b3ca5271-21b1-ab33-2dff-82735ebe9128@gmail.com> <235143da452c4ff4aec39a26ba918e7e@XCH15-06-11.nw.nos.boeing.com> <1489a50a-2616-f9ac-4109-16c595e15f90@gmail.com> <FA3032F9-F44B-45B4-9AFF-01EBC84F1448@employees.org> <b1c5c13d-ef69-ef30-546c-9178a2655caf@si6networks.com> <391c730c-fa75-7596-bb6b-383ea6583131@gmail.com> <0b57c999-b5df-8a44-e3fd-55cee628f3f3@si6networks.com> <20170614092327.GB30896@gir.theapt.org> <E61AFFF1-0354-41EE-8E11-50433B26BAF7@employees.org> <20170614094034.GC30896@gir.theapt.org> <A7502902-245B-499B-916B-28630CD5A824@employees.org> <6c4157da7039438981db0f4ba46df916@XCH15-06-11.nw.nos.boeing.com>
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On Jun 14, 2017, at 10:36, Manfredi, Albert E <albert.e.manfredi@boeing.com> wrote:
> From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of otroan@employees.org
>> 
>> What _problem_ does changing the 64 bit boundary solve for _you_?
> 
> A category of problems, such as creating hotspots with smartphones that have been allocated a single /64. A real-world situation, in which there's no conceivable reason to have to go hat in hand to service provider, asking for more /64s. […]

This category of problem is about connecting *routers* (not hosts) to the Internet via RFC 7278.

If all you’re connecting at the hotspot are hosts, then why would you need more than one subnet? And if you need more than one subnet— for some premium mobile hotspot thingie I guess— why not use more than one UE?

"What is the killer app for connecting *routers* to the Internet using a /64 subnet sharing scheme?” I ask, bearing in mind that you can’t be talking about 6LBR, because RFC 4944 fixes the subnet prefix length at 64 bits for all 6LO-over-link specifications. And why isn’t simply using IPv6/NAT the simpler and more straightforward solution to your category of problems?

Shorter james: I’m not ready to believe you have any problems in this category. Please provide a clear example.


--james woodyatt <jhw@google.com <mailto:jhw@google.com>>

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