Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt
Tim Chown <Tim.Chown@jisc.ac.uk> Mon, 17 July 2017 07:14 UTC
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From: Tim Chown <Tim.Chown@jisc.ac.uk>
To: Timothy Winters <twinters@iol.unh.edu>
CC: Brian E Carpenter <brian.e.carpenter@gmail.com>, 6man <ipv6@ietf.org>
Subject: Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt
Thread-Topic: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt
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Date: Mon, 17 Jul 2017 07:14:29 +0000
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Hi, In-line... > On 16 Jul 2017, at 09:25, Timothy Winters <twinters@iol.unh.edu> wrote: > > Hi Brian, > > On Sun, Jul 16, 2017 at 12:06 AM, Brian E Carpenter <brian.e.carpenter@gmail.com> wrote: > Hi, > > Some comments, but not a full review: > > > - IPv6 over ATM Networks [RFC2492] > > Is this still worth mentioning? > > Probably not, we'll remove this in the next draft. How do you feel about Frame Relay? At present it seems we’ll leave that in. > > - IP version 6 over PPP [RFC5072] > > > > In addition to traditional physical link-layers, it is also possible > > to tunnel IPv6 over other protocols. Examples include: > > Shouldn't PPP be in this list, not the previous list? > Yes. > > > - Teredo: Tunneling IPv6 over UDP through Network Address > > Translations (NATs) [RFC4380] > > > > - Section 3 of "Basic Transition Mechanisms for IPv6 Hosts and > > Routers" [RFC4213] > > > > **BIS Do we want a small section somewhere on UDP IPv6 tunneling, and > > issues like RFC 6935, or 6936?** > > Maybe. But the field is evolving: Teredo is surely obsolescent, there's > also TSP (RFC5572), and draft-ietf-intarea-gue is in progress. So I wonder > what you can really say. So I think we’ll not ad text here. > > 5.1. Internet Protocol Version 6 - RFC 2460 > > > > The Internet Protocol Version 6 is specified in [RFC2460]. This > > specification MUST be supported. > > > > **BIS Again, update for RFC 2460 -bis ** > > > > Any unrecognized extension headers or options MUST be processed as > > described in RFC 2460. > > As well as s/2460/8200/, I suggest s/processed/treated/ to avoid another > debate about the meaning of 'processed' ;-). > > (And don't forget s/1981/8201/.) > Thanks, we'll make all those updates. > > > 5.7. IPv6 Jumbograms - RFC 2675 > ... > > and there is essentially no reported experience from usage. > > Consequently, IPv6 Jumbograms [RFC2675] remain optional at this time. > > > > **BIS Are these used? Do we need to modify the text for that? ** > > I don't think so. They appear to be harmless and maybe somebody will > need them one day, so there is no obvious argument for deprecation. > K, we'll remove the note. > > > 5.10. First-Hop Router Selection - RFC 8028 > ... > > Hosts that may be deployed in such multihomed environments SHOULD > > follow the guidance given in [RFC8028]. > > Which should therefore be listed as a Normative reference. > Thanks, we'll update that to Normative. > > > 6.1. IP Version 6 Addressing Architecture - RFC 4291 > > > > The IPv6 Addressing Architecture [RFC4291] MUST be supported. > > > > **BIS Update to 4291-bis ** > > Maybe not :-( > I still have hope..... > > > **BIS Add note on Why /64? RFC 7421, after the conclusion of the > > RFC4291-bis (lengthy!!!) discussions on the 64-bit IID topic. But no > > need for /127 p2p text RFC 6164. And no need for note on IID > > significance, as per RFC 7136. ** > > I'm not sure we need to mention RFC 7421 here at all. If 4291bis gets > published, it will be mentioned there. If it doesn't get published, > 64 remains fixed anyway. > Thanks for the feedback. Yes, we’ll leave it a little while to see how 4291-bis pans out. > > 6.3. IPv6 Stateless Address Autoconfiguration - RFC 4862 > > > > Hosts MUST support IPv6 Stateless Address Autoconfiguration as > > defined in either [RFC4862] or [RFC7217]. > > That's wrong, surely? SLAAC is defined in 4862, and 7217 doesn't even > formally update it. I think you should simply delete 'or [RFC7217]'. > > > It is recommended that, > > unless there is a specific requirement for MAC addresses to be > > embedded in an IID, nodes follow the procedure in RFC7217 to generate > > SLAAC-based addresses. > > That only applies if a stable IID is wanted. I would suggest: > > It is recommended that, > unless there is a specific requirement for MAC addresses to be > embedded in an IID, nodes follow the procedures in [RFC7217] > or [RFC4941] (see below) to generate SLAAC-based addresses. > > (I think we've already established that it's possible to operate > a node that has no stable global-scope address.) > OK, this text looks fine to me. Or we could just point at RFC8064? > > 6.6. Default Address Selection for IPv6 - RFC 6724 > > > > IPv6 nodes will invariably have multiple addresses configured > > simultaneously, and thus will need to choose which addresses to use > > for which communications. The rules specified in the Default Address > > Selection for IPv6 [RFC6724] document MUST be implemented. > > I am concerned about the famous rule 5.5 in RFC6724. It's optional there, > but elsewhere you have a SHOULD for RFC8028, whose section 3.3 in turn > promotes rule 5.5 to a SHOULD. Could we add that promotion here > too? Otherwise there is a complicated trail for implementers to follow. > I like this idea, how about. > > Since RFC 8028 updates rule 5.5 from RFC 6724 implementations SHOULD implement this rule. > > > 14. Router-Specific Functionality > > I think you should require BCP198 (RFC7068) support. > Interesting thought (should be RFC7608). I don't have a problem adding this, I'll check with the co-authors. No preference either way here. Thanks Brian, Tim > > Regards > Brian > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- > > > > -- > Now offering testing for SDN applications and controllers in our SDN switch test bed. Learn more today http://bit.ly/SDN_IOLPR > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > --------------------------------------------------------------------
- I-D Action: draft-ietf-6man-rfc6434-bis-01.txt internet-drafts
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Brian E Carpenter
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Timothy Winters
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Lorenzo Colitti
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Erik Kline
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Nick Hilliard
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Lorenzo Colitti
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Job Snijders
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Nick Hilliard
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Sander Steffann
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Lorenzo Colitti
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt David Farmer
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Nick Hilliard
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt David Farmer
- RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Morizot Timothy S
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Brian E Carpenter
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Brian E Carpenter
- RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Morizot Timothy S
- RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt STARK, BARBARA H
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Tim Chown
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Tim Chown
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Nick Hilliard
- RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Templin, Fred L
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Tim Chown
- RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Templin, Fred L
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Timothy Winters
- RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Templin, Fred L
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Bob Hinden
- RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Templin, Fred L
- RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Manfredi, Albert E
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Brian E Carpenter
- RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Manfredi, Albert E
- RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Templin, Fred L
- Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Lorenzo Colitti
- RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt Templin, Fred L