Re: [Trans] Adam Roach's Discuss on draft-ietf-trans-rfc6962-bis-31: (with DISCUSS and COMMENT)

[Richard Barnes <[e-mail]>]

On Wed, Mar 13, 2019 at 10:19 AM Mirja Kuehlewind <[e-mail]>
wrote:

> HI Ekr,
>
> I actually have a related question. As this document is rather specifying
> a new version than “just” correcting an existing spec, it’s not really
> clear to me if the obsolete tag is the right choice here. I know some other
> protocols do this in a similar fashion, but I would rather recommend to
> only update the previous version RFC (in order to create a link to this new
> spec) or declare it historic if usage is not recommended anymore. I think
> that's also something we should discuss on the IESG.
>

Strongly disagree with this reasoning.  Much like with TLS 1.2 -> 1.3, we
want people to deploy the new version, not the old version.  The tool we
have to communicate "Don't use this old version" is "Obsoletes".

--Richard



>
> Coming back to your original question about how much should be changed in
> a bis document. I think this is a valid question for bis doc that correct
> known errors. However, in case of this document that specifies a new
> version, I think it is the right thing to do to also align such a new
> version with the guidelines we follow at the time of publication.
>
> Mirja
>
>
> > On 13. Mar 2019, at 14:28, Eric Rescorla <[e-mail]> wrote:
> >
> >
> >
> > On Tue, Mar 12, 2019 at 11:36 PM Adam Roach via Datatracker
> <noreply@ietf..org> wrote:
> > Adam Roach has entered the following ballot position for
> > draft-ietf-trans-rfc6962-bis-31: Discuss
> >
> > When responding, please keep the subject line intact and reply to all
> > email addresses included in the To and CC lines. (Feel free to cut this
> > introductory paragraph, however.)
> >
> >
> > 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-trans-rfc6962-bis/
> >
> >
> >
> > ----------------------------------------------------------------------
> > DISCUSS:
> > ----------------------------------------------------------------------
> >
> > Thanks to everyone who worked on updating this protocol to reflect
> experience
> > gathered from the initial CT protocol. I have one blocking comment, and
> a small
> > number of editorial suggestions.
> >
> >
> ---------------------------------------------------------------------------
> >
> > §5:
> >
> > >  Clients are configured with a base URL for a log and construct URLs
> > >  for requests by appending suffixes to this base URL.  This structure
> > >  places some degree of restriction on how log operators can deploy
> > >  these services, as noted in [RFC7320].  However, operational
> > >  experience with version 1 of this protocol has not indicated that
> > >  these restrictions are a problem in practice.
> >
> > The synthesis of URLs by a protocol in this fashion is prohibited by BCP
> 190:
> >
> >    Scheme definitions define the presence, format, and semantics of a
> >    path component in URIs; all other specifications MUST NOT constrain,
> >    or define the structure or the semantics for any path component.
> >
> > Unless the intention of this document is to update BCP 190 to change this
> > normative requirement, we can't publish it in its current form. Note
> that doing
> > so would require a change of venue, as updates to BCP 190 would not be
> covered
> > by the current TRANS charter.
> >
> > Please see BCP 190 section 3 for alternate approaches. All three
> approaches
> > could be made to work for CT, and I would be happy to explain how to do
> so if
> > clarification is desired.
> >
> > While I agree that this is forbidden by BCP 190, this structure is
> inherited from
> > RFC 6962, which predated 7320, so making that change seems like it's
> going
> > to be fairly disruptive. This seems like it is falling into our
> discussion the other
> > day about what must be changed in -bis documents.
> >
> > -Ekr
> >
> >
> >
> > ----------------------------------------------------------------------
> > COMMENT:
> > ----------------------------------------------------------------------
> >
> > §1.1:
> >
> > >  The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
> > >  "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
> > >  document are to be interpreted as described in [RFC2119].
> >
> > Consider using the boilerplate from RFC 8174.
> >
> >
> ---------------------------------------------------------------------------
> >
> > §1.3:
> >
> > >  This document revises and obsoletes the experimental CT 1.0 [RFC6962]
> > >  protocol, drawing on insights gained from CT 1.0 deployments and on
> > >  feedback from the community.
> >
> > Given that *this* document is also experimental, it seems a bit odd to
> call out
> > RFC 6962 as experimental.
> >
> >
> ---------------------------------------------------------------------------
> >
> > §2.1.1:
> >
> > >  We have established a registry of acceptable hash algorithms (see
> >
> > The use of first person here is awkward. Consider: "This document
> > establishes..."
> >
> >
> ---------------------------------------------------------------------------
> >
> > §10.2:
> >
> > >  | 0x01 - | Unassigned |                        | Specification      |
> > >  | 0xDF   |            |                        | Required and       |
> > >  |        |            |                        | Expert Review      |
> >
> > The policy being cited here is confusing. It is unclear whether the
> intention is
> > that values can be registered under both §4.5 and §4.6 of RFC 8126. I
> suspect
> > the intention here is the policy specified in RFC 8126 §4.6 only, without
> > reference to the policy in §4.5. If so, please use the formal name
> > "Specification Required."
> >
> >
> ---------------------------------------------------------------------------
> >
> > §10.4:
> >
> > >  | 0x0008 -    | Unassigned           | Specification Required and   |
> > >  | 0xDFFF      |                      | Expert Review                |
> >
> > Same comment as above.
> >
> >
> ---------------------------------------------------------------------------
> >
> > §10.5:
> >
> > >  | 0x0000 -      | Unassigned | n/a | Specification Required and     |
> > >  | 0xDFFF        |            |     | Expert Review                  |
> >
> > Same comment as above.
> >
> >
>
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