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Re: [Softwires] Suresh Krishnan's No Objection on draft-ietf-softwire-iftunnel-06: (with COMMENT)

<mohamed.boucadair@orange.com> Thu, 13 June 2019 05:26 UTC

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From: mohamed.boucadair@orange.com
To: Suresh Krishnan <suresh@kaloom.com>, The IESG <iesg@ietf.org>
CC: "draft-ietf-softwire-iftunnel@ietf.org" <draft-ietf-softwire-iftunnel@ietf.org>, Yong Cui <cuiyong@tsinghua.edu.cn>, "softwire-chairs@ietf.org" <softwire-chairs@ietf.org>, "softwires@ietf.org" <softwires@ietf.org>
Thread-Topic: Suresh Krishnan's No Objection on draft-ietf-softwire-iftunnel-06: (with COMMENT)
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Date: Thu, 13 Jun 2019 05:26:00 +0000
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Subject: Re: [Softwires] Suresh Krishnan's No Objection on draft-ietf-softwire-iftunnel-06: (with COMMENT)
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Hi Suresh, 

Please see inline.

Cheers,
Med

> -----Message d'origine-----
> De : Suresh Krishnan via Datatracker [mailto:noreply@ietf.org]
> Envoyé : jeudi 13 juin 2019 06:01
> À : The IESG
> Cc : draft-ietf-softwire-iftunnel@ietf.org; Yong Cui; softwire-
> chairs@ietf.org; cuiyong@tsinghua.edu.cn; softwires@ietf.org
> Objet : Suresh Krishnan's No Objection on draft-ietf-softwire-iftunnel-06:
> (with COMMENT)
> 
> Suresh Krishnan has entered the following ballot position for
> draft-ietf-softwire-iftunnel-06: No Objection
> 
> When responding, please keep the subject line intact and reply to all
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> 
> Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
> for more information about IESG DISCUSS and COMMENT positions.
> 
> 
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-softwire-iftunnel/
> 
> 
> 
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
> 
> I have a hard time seeing the need for a generic UDP tunnel type (8) and
> also
> specific instances of UDP tunneling such as Teredo (14). I think it is
> better
> to go one way or another but not do both to avoid any confusion.

[Med] These codes are already in the registry. This I-D is just echoing what is recorded in the current authoritative registry. 
If one of these codes is relaxed, the YANG module will be updated by IANA to reflect that. 

I do think that draft-thaler-iftype-reg is the right place to include a recommendation to encourage tunnel protocol designers to register their tunnel types rather than to reuse the generic UDP type. 

 In any
> case I
> think RFC8085 *should not* be the sole reference for UDP tunneling as it
> does
> not specify UDP tunneling but provides guidelines for designers of UDP
> based
> tunneling mechanisms.

[Med] That is the best reference we have for UDP. It is certainly better than 4087.

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