Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt> (IP Version 6 Addressing Architecture) to Internet Standard
Pierre Pfister <pierre.pfister@darou.fr> Thu, 23 February 2017 10:24 UTC
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Subject: Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt> (IP Version 6 Addressing Architecture) to Internet Standard
From: Pierre Pfister <pierre.pfister@darou.fr>
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Date: Thu, 23 Feb 2017 11:24:33 +0100
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To: Ole Troan <otroan@employees.org>, 6man WG <ipv6@ietf.org>, IETF-Discussion Discussion <ietf@ietf.org>
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Cc: james woodyatt <jhw@google.com>, draft-ietf-6man-rfc4291bis@ietf.org, 6man-chairs@ietf.org
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Hello all, > Proposal: > IPv6 unicast routing is based on prefixes of any valid length up to > 128 bits [BCP198]. However, as explained in [RFC7421], the Interface ID > of unicast addresses is generally required to be 64 bits in length, with > exceptions only provided in special cases where expressly recognised > in IETF standards track documents. > The only place in IPv6 standards where the 64 boundary is mandated is on the 2000::/3 rule. There is not a single implementation or deployment of that rule. There is no instance where trying to configure a prefix of length different than 64 will work when the prefix is within 2000::/3, and fail when it is not. That is a sufficient reason to not include this rule as part of the standard track. Nevertheless, SLAAC over Ethernet links indeed requires prefix length of 64. As documented in the RFC7421, there are a few examples of protocols which require 64 bits long interface identifiers. SLAAC is not the only way to configure IPv6 hosts though. Manual configuration, automated configuration, and DHCP are all IETF approved ways of configuring IPv6 hosts. They all work with prefixes of various lengths. Does 'special cases' in the proposed text covers manual/automated configuration or DHCP ? If so, it is far from being clear. You obviously should use /64s if you want SLAAC to work, as well as other protocols which are documented in RFC7421, but /64 is not the rule, it is an architectural consideration that you have to take into account when you design your network depending on the protocols that you want to run there. Therefore, as far as this discussion is concerned, there is no reason to mandate 64 bits boundaries as part of the IPv6 specification. - Pierre
- Last Call: <draft-ietf-6man-rfc4291bis-07.txt> (I… The IESG
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Fernando Gont
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Brian E Carpenter
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Fred Baker
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… JORDI PALET MARTINEZ
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… JORDI PALET MARTINEZ
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Karsten Thomann
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… otroan
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Brian E Carpenter
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Brian E Carpenter
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… otroan
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… sthaug
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Brian E Carpenter
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… otroan
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Brian E Carpenter
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- AW: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Karsten Thomann
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… sthaug
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… otroan
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… otroan
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… otroan
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Mark Smith
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- RE: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Manfredi, Albert E
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… james woodyatt
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Mark Smith
- RE: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Manfredi, Albert E
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Fred Baker
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… otroan
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… james woodyatt
- RE: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Manfredi, Albert E
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… otroan
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… james woodyatt
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Sander Steffann
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Sander Steffann
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Sander Steffann
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Sander Steffann
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Fred Baker
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Brian E Carpenter
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Karsten Thomann
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Mark Smith
- RE: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Manfredi, Albert E
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Mark Smith
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Christopher Morrow
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Brian E Carpenter
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Christopher Morrow
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Brian E Carpenter
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Christopher Morrow
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Christopher Morrow
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Mark Andrews
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Mark Smith
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- RE: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Manfredi, Albert E
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Brian E Carpenter
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Brian E Carpenter
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Fernando Gont
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Randy Bush
- RE: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Manfredi, Albert E
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Erik Kline
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Fernando Gont
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Erik Kline
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… sthaug
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Fernando Gont
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Fernando Gont
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… sthaug
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Fernando Gont
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Philip Homburg
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Pierre Pfister
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Wilco Baan Hofman
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Job Snijders
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Christopher Morrow
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… 神明達哉
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Christopher Morrow
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Mark Andrews
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Jared Mauch
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Jared Mauch
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Fernando Gont
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Pierre Pfister
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… David Farmer
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Mikael Abrahamsson
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Peter Hessler
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Nick Hilliard
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Fernando Gont
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… 神明達哉
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… 神明達哉
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Xing Li
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Xing Li
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Xing Li
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Lorenzo Colitti
- Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt… Alexandre Petrescu