Re: A proposal for draft-ietf-6man-rfc4291bis-07
Alexandre Petrescu <alexandre.petrescu@gmail.com> Fri, 03 March 2017 09:17 UTC
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Subject: Re: A proposal for draft-ietf-6man-rfc4291bis-07
To: ipv6@ietf.org
References: <CAN-Dau17q_BrUuzfvB1mLDt6p5UxYikphWaHpa8VQ2L-3kx-DA@mail.gmail.com>
From: Alexandre Petrescu <alexandre.petrescu@gmail.com>
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Date: Fri, 03 Mar 2017 10:17:15 +0100
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David, Sincerely I appreciate the effort and would like to agree to most points. But here is my answer and I wont change. Le 02/03/2017 à 23:43, David Farmer a écrit : > I've been thinking about this, really hard, and listening to what > others are saying. I think we want to say the following; > > 1. IPv6 unicast routing is 128 bits in length [BCP198], AKA not > classful! Agreed, we want to say this. > 2. Subnet Prefixes of 64 bits are RECOMMENDED I disagree, we dont want to say this. > 3. IIDs are REQUIRED to be 64 bits I disagree. > 4. Say nothing that would imply you cannot configure a prefix length > longer than 64 bits in length, at least manually. I agree. > 5. Avoid all explicit exceptions, like RFC6164, etc... I dont know. > How about in the current draft remove the 2nd paragraph of 2.4, then > add the following paragraph at the end of section 2.4 > > IPv6 unicast routing is based on prefixes of any length up to 128 > bits [BCP198]. However, subnet prefixes of 64 bits in length are > recommended in normal use. I agree. > Furthermore, subnet prefixes and Interface IDs both of 64 bits in > length are required when a unicast address is formed from a subnet > prefix and an Interface ID. This phrase is too much. > Otherwise, when a subnet prefix of > another length is used then a unicast address is assumed to have no > internal structure and is treated as a single 128 bit quantity. The > rationale for the 64 bit boundary in IPv6 addresses can be found in > [RFC7421]. This is an explanation of the earlier phrase, and as such is too too much. > Then in the 4th paragraph of 2.4.1 > > As noted in Section 2.4, when a unicast address is formed from a > subnet prefix and an Interface ID, both are required to be 64 bits in > length. Is the 'subnet prefix' coming from an RA? From elsewhere? There are very many ways to make a subnet prefix. > I think this accomplishes the 5 goals above and is not inconsistent > with at least the intent of RFC4291. If you read section 2.5 of the > RFC4291, I think my new paragraph is only more clearly restating what > is said there already. I think your text suggestion is indeed answering the initial requirements formulated at the top. But I can not agree with it as such. Again - thank you for the effort, it is good to pursue. Alex > > Note that SLACC and other things that use IIDs have 64 bits required > for the IID and subnet prefix length. But, it should also be noted > that host are not required to have any knowledge of an addresses > structure including its own addresses, therefore IIDs are in fact > optional. Additionally, 64 bit prefix lengths are recommend for > everything, including manual config and DHCP, but manual config and > DHCP are allowed other prefix lengths as well. Also, the exception > for unicast addresses that begin with 000 is no longer really > necessary. > > Rotten tomatoes and eggs now please. :) > > Thanks. > > -- =============================================== David Farmer > Email:farmer@umn.edu <mailto:Email%3Afarmer@umn.edu> Networking & > Telecommunication Services Office of Information Technology > University of Minnesota 2218 University Ave SE Phone: > 612-626-0815 Minneapolis, MN 55414-3029 Cell: 612-812-9952 > =============================================== > > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list ipv6@ietf.org Administrative > Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- >
- A proposal for draft-ietf-6man-rfc4291bis-07 David Farmer
- RE: A proposal for draft-ietf-6man-rfc4291bis-07 Manfredi, Albert E
- RE: A proposal for draft-ietf-6man-rfc4291bis-07 Manfredi, Albert E
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Brian E Carpenter
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 David Farmer
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 David Farmer
- RE: A proposal for draft-ietf-6man-rfc4291bis-07 Manfredi, Albert E
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 David Farmer
- RE: A proposal for draft-ietf-6man-rfc4291bis-07 Manfredi, Albert E
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Lorenzo Colitti
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 David Farmer
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 otroan
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Alexandre Petrescu
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Alexandre Petrescu
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 David Farmer
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Alexandre Petrescu
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Alexandre Petrescu
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Alexandre Petrescu
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 james woodyatt
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Alexandre Petrescu
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 james woodyatt
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 james woodyatt
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Iván Arce
- RE: A proposal for draft-ietf-6man-rfc4291bis-07 Manfredi, Albert E
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 james woodyatt
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Brian E Carpenter
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Philip Homburg
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 james woodyatt
- RE: A proposal for draft-ietf-6man-rfc4291bis-07 Manfredi, Albert E
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Philip Homburg
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Alexandre Petrescu
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Philip Homburg
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 james woodyatt
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 Philip Homburg
- Re: A proposal for draft-ietf-6man-rfc4291bis-07 james woodyatt
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Timothy Winters
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… james woodyatt
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Timothy Winters
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… 神明達哉
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Sander Steffann
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Sander Steffann
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Sander Steffann
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Fernando Gont
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Sander Steffann
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… 神明達哉
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… james woodyatt
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Timothy Winters
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… james woodyatt
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… james woodyatt
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Timothy Winters
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… james woodyatt
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Timothy Winters
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… 神明達哉
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… james woodyatt
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Mark Smith
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… otroan
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… otroan
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Mark Andrews
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Mark Smith
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… otroan
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Mark Smith
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… otroan
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… otroan
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… otroan
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… otroan
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… james woodyatt
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… David Farmer
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Timothy Winters
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… james woodyatt
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Timothy Winters
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… 神明達哉
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… otroan
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Erik Kline
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Alexandre Petrescu
- Re: [v6ops] A proposal for draft-ietf-6man-rfc429… Mark Andrews