Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-ipv6-prefix-per-host-07.txt
JORDI PALET MARTINEZ <jordi.palet@consulintel.es> Mon, 07 August 2017 13:07 UTC
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Date: Mon, 07 Aug 2017 15:07:18 +0200
From: JORDI PALET MARTINEZ <jordi.palet@consulintel.es>
To: v6ops list <v6ops@ietf.org>
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Thread-Topic: [v6ops] I-D Action: draft-ietf-v6ops-unique-ipv6-prefix-per-host-07.txt
References: <CAO42Z2zLgw3cYapf=1y9pm4cWMZZ32DT2ryfPb6BGUFjCfmrMg@mail.gmail.com> <4939D55E-D37D-4551-9EB0-916FBACBC2BD@thehobsons.co.uk> <CAO42Z2wJBCo1yjguWSy-jzSvndeZTPgtN71FfdEhvqrVAUhZUA@mail.gmail.com> <9bd9f886-f53b-109f-d998-1d4c7adaf3b1@gmail.com> <B6A257C9-7E8A-452D-9C0F-0B10A31990CB@thehobsons.co.uk> <796A0ED0-0F58-43FA-9F81-D4D736A35F3B@steffann.nl> <BD3B4153-2EEF-4BFB-832D-D126A75AEC11@thehobsons.co.uk> <CAN-Dau2jzbQPuE5diEz-XzfRBHY=O1znE8hfy8P-Eee=MVwC_w@mail.gmail.com> <7C6C4FCC-26B9-493D-9992-4663DE6EB9CE@jisc.ac.uk> <3A69468C-98E4-4631-A52F-3D8772646EEE@consulintel.es> <20170807110746.GG45648@Space.Net>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/v6ops/3THcDy8tDhLwr7yIHMbni8Tgf9w>
Subject: Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-ipv6-prefix-per-host-07.txt
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I’m not saying that this will apply to “every” site, and I guess that in most of the cases, if they have already a /48, they may want to use part of it the way is described in this document, not necessarily the complete /48. For example, from the /48, you may be using a /56 in a data center which has servers with tons of VMs. So the difficulty here is to find the way to justify those cases that really need this, if there are cases that need, for example instead of a /48, a /47, /46 or /44, etc. Regards, Jordi -----Mensaje original----- De: Gert Doering <gert@space.net> Responder a: <gert@space.net> Fecha: lunes, 7 de agosto de 2017, 13:07 Para: JORDI PALET MARTINEZ <jordi.palet@consulintel.es> CC: v6ops list <v6ops@ietf.org> Asunto: Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-ipv6-prefix-per-host-07.txt Hi, On Mon, Aug 07, 2017 at 12:35:25PM +0200, JORDI PALET MARTINEZ wrote: > Most of the RIR policies allow a shorter prefix than /48 for a single site > if justified. "If justified" has traditionally been along the lines of "number of buildings, number of subnets, number of aggregation levels", so, number of *networks*. "Number of hosts" has not been a justification argument in (at least) RIPE IPv6 policy, so that would be a fairly significant change. Personally, I would be very careful here - permitting assignments of larger address blocks because we *waste* a /64 on a potentially very large number of hosts in a network might cause shortage further up. And yes, I think this is extremely wastive, well over the limits of what is normal "do not care about wasting addresses!" level of IPv6 normal. On a subnet, having a "it is big enough for everything, no matter how many hosts" is a desirable property because it makes network planning much easier - single size fits all, focus on more interesting work. A /64 is already excessive here, but given that the number of subnets is bound by factors like "how many different purposes can you come up with?", "router config", etc. I'm willing to accept a /64 here. A /64 per *host* is much less bound - while far beyond anything you can configure on that host, so the trade-off "waste vs. useful number of bits" is not reasonable for me. Should this topic come up in RIPE policy discussion, I'll chair the discussion and refrain from having an opinion, but will reserve the right for a "told you so" later. Gert Doering -- RIPE APWG chair -- have you enabled IPv6 on something today...? SpaceNet AG Vorstand: Sebastian v. Bomhard Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (0)89/32356-444 USt-IdNr.: DE813185279 ********************************************** IPv4 is over Are you ready for the new Internet ? http://www.consulintel.es The IPv6 Company This electronic message contains information which may be privileged or confidential. The information is intended to be for the use of the individual(s) named above. If you are not the intended recipient be aware that any disclosure, copying, distribution or use of the contents of this information, including attached files, is prohibited.
- [v6ops] I-D Action: draft-ietf-v6ops-unique-ipv6-… internet-drafts
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- [v6ops] Fwd: I-D Action: draft-ietf-v6ops-unique-… DY Kim
- [v6ops] Fwd: I-D Action: draft-ietf-v6ops-unique-… DY Kim
- [v6ops] Fwd: I-D Action: draft-ietf-v6ops-unique-… DY Kim
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… Mark Smith
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mikael Abrahamsson
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mikael Abrahamsson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mikael Abrahamsson
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… Mark Smith
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… Brzozowski, John
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mikael Abrahamsson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Tim Chown
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… Brzozowski, John
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… David Farmer
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… David Farmer
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… Gert Doering
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… David Farmer
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… David Farmer
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… Brzozowski, John
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… Brzozowski, John
- Re: [v6ops] Fwd: I-D Action: draft-ietf-v6ops-uni… Gert Doering
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Simon Hobson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Simon Hobson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Sander Steffann
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Simon Hobson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… David Farmer
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Tim Chown
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Simon Hobson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mikael Abrahamsson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… JORDI PALET MARTINEZ
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mikael Abrahamsson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Gert Doering
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Sander Steffann
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mikael Abrahamsson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Sander Steffann
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mikael Abrahamsson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Gert Doering
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Tim Chown
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Gert Doering
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… JORDI PALET MARTINEZ
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… David Farmer
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… james woodyatt
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Simon Hobson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Gert Doering
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Simon Hobson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Simon Hobson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DaeYoung KIM
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DaeYoung KIM
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DaeYoung KIM
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DaeYoung KIM
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DaeYoung KIM
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DaeYoung KIM
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DaeYoung KIM
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Ole Troan
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Ole Troan
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Ole Troan
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Ole Troan
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Lee Howard
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… David Farmer
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… 神明達哉
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… 神明達哉
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… DY Kim
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… 神明達哉
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Alexandre Petrescu
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… 神明達哉
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Alexandre Petrescu
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Fred Baker
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Alexandre Petrescu
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Alexandre Petrescu
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… 神明達哉
- Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-i… Alexandre Petrescu