Re: <draft-ietf-6man-rfc1981bis-05.txt>
Tim Chown <Tim.Chown@jisc.ac.uk> Mon, 03 April 2017 11:20 UTC
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From: Tim Chown <Tim.Chown@jisc.ac.uk>
To: Bob Hinden <bob.hinden@gmail.com>
CC: IPv6 List <ipv6@ietf.org>
Subject: Re: <draft-ietf-6man-rfc1981bis-05.txt>
Thread-Topic: <draft-ietf-6man-rfc1981bis-05.txt>
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Date: Mon, 03 Apr 2017 11:20:43 +0000
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Hi Bob, These generally look good, a few comments in-line... > On 31 Mar 2017, at 16:32, Bob Hinden <bob.hinden@gmail.com> wrote: > > Hi, > > I published a new version of rfc1981bis (-05). Links to the document below. > > The changes in this version are based on comments in IETF last call reviews by Gorry Fairhurst, Joe Touch, Susan Hares, Stewart Bryant, Rifaat Shekh-Yusef, and Donald Eastlake. Many thank to the reviewers as I think the document is significantly improved, it is much better aligned with current transport practice. > > The changes include: > > o Clarify that the purpose of PMTUD is to reduce the need > for IPv6 Fragmentation. > > o Added text to Introduction about effects on PMTUD when > ICMPv6 messages are blocked. I think "are susceptible to loss if" should read “are susceptible to packet loss if” or perhaps "are susceptible to problematic connectivity if “ I notice that some text in RFC1981bis uses RFC2119-style MUST/SHOULD/etc text, but the document doesn’t include the 2119 “boilerplate”. Should this be added? And should the use of should/SHOULD, must/MUST, etc be reviewed through the document? There’s a discrepancy between 1981bis and 2460bis on PMTUD implementation. 1981bis says SHOULD implement, 2460bis says implementation is “strongly recommended” - perhaps be consistent? > o Clarified in Section 4. that nodes should validate the > payload of ICMPv6 PTB messages per RFC4443. > > o Removed text in Section 5.2 about the number of paths to a > destination. > > o Changed title of Section 5.4 to "Packetization layer > actions". > > o Clarified first paragraph in Section 5.4 to to cover all > packetization layers, not just TCP. > > o Clarified text in Section 5.4 to use normal retransmission > methods. > > o Add clarification to Note in Section 5.4 about > retransmissions. > > o Removed text in Section 5.4 that described 4.2BSD as it is > now obsolete. > > o Removed reference to TP4 in Section 5.5. > > o Updated text in Section 5.5 about NFS including adding a > current reference to NFS and removing obsolete text. > > o Revised text in Section 6 to clarify first attack > response. > > o Added new text in Section 6 to clarify the effect of > ICMPv6 filtering on PMTUD. Perhaps reference RFC4890 here? > o Aligned terminology for the packetization layer > terminology. > > o Editorial changes. > > A diff from the previous version can be found at: > > https://tools.ietf.org/rfcdiff?url2=draft-ietf-6man-rfc1981bis-05.txt > > Please review. > > This is part of the project to move the core IPv6 specifications to Internet Standard. Best wishes, Tim > > Thanks, > Bob > >> A new version of I-D, draft-ietf-6man-rfc1981bis-05.txt >> has been successfully submitted by Robert M. Hinden and posted to the >> IETF repository. >> >> Name: draft-ietf-6man-rfc1981bis >> Revision: 05 >> Title: Path MTU Discovery for IP version 6 >> Document date: 2017-03-31 >> Group: 6man >> Pages: 18 >> URL: https://www.ietf.org/internet-drafts/draft-ietf-6man-rfc1981bis-05.txt >> Status: https://datatracker.ietf.org/doc/draft-ietf-6man-rfc1981bis/ >> Htmlized: https://tools.ietf.org/html/draft-ietf-6man-rfc1981bis-05 >> Htmlized: https://datatracker.ietf.org/doc/html/draft-ietf-6man-rfc1981bis-05 >> Diff: https://www.ietf.org/rfcdiff?url2=draft-ietf-6man-rfc1981bis-05 >> >> Abstract: >> This document describes Path MTU Discovery for IP version 6. It is >> largely derived from RFC 1191, which describes Path MTU Discovery for >> IP version 4. It obsoletes RFC1981. > > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > --------------------------------------------------------------------
- <draft-ietf-6man-rfc1981bis-05.txt> Bob Hinden
- Re: <draft-ietf-6man-rfc1981bis-05.txt> Tim Chown
- Re: <draft-ietf-6man-rfc1981bis-05.txt> C. M. Heard
- Re: <draft-ietf-6man-rfc1981bis-05.txt> Bob Hinden
- Re: <draft-ietf-6man-rfc1981bis-05.txt> Bob Hinden