Re: [netconf] [Technical Errata Reported] RFC8525 (6484)

"Rob Wilton (rwilton)" <rwilton@cisco.com> Mon, 15 March 2021 11:57 UTC

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From: "Rob Wilton (rwilton)" <rwilton@cisco.com>
To: =?iso-8859-1?Q?Martin_Bj=F6rklund?= <mbj+ietf@4668.se>, "janl@tail-f.com" <janl@tail-f.com>
CC: "netconf@ietf.org" <netconf@ietf.org>, "warren@kumari.net" <warren@kumari.net>
Thread-Topic: [netconf] [Technical Errata Reported] RFC8525 (6484)
Thread-Index: AQHXGXow0/RDYvmLDkm3GJcszdk3d6qExvWAgAADazCAAAbTAIAABOsAgAAD6wCAAAPsAIAAAGbA
Date: Mon, 15 Mar 2021 11:57:37 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netconf/PLjR7B2Z6ItGxCvdqwMqjcT4Q48>
Subject: Re: [netconf] [Technical Errata Reported] RFC8525 (6484)
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X-List-Received-Date: Mon, 15 Mar 2021 11:57:45 -0000

[Dropping the RFC editor for the moment]

Yes, I was basically thinking along the same lines as Martin.

I'm wondering whether we should consider doing an RFC8525-bis document with the specific aim of addressing this?

As an aside, this is also another example of why trying to version YANG modules via RFCs isn't necessary the ideal choice.  I.e., fixing that in a git repository of IETF YANG modules (although with the errata) would also seem like a pragmatic solution.

Regards,
Rob


> -----Original Message-----
> From: Martin Björklund <mbj+ietf@4668.se>
> Sent: 15 March 2021 10:47
> To: janl@tail-f.com
> Cc: Rob Wilton (rwilton) <rwilton@cisco.com>om>; rfc-editor@rfc-editor.org;
> netconf@ietf.org; warren@kumari.net
> Subject: Re: [netconf] [Technical Errata Reported] RFC8525 (6484)
> 
> Jan Lindblad <janl@tail-f.com> wrote:
> > Martin,
> >
> > >> Rob, Martin,
> > >>
> > >> Wouldn't changing the revision date be a massively
> > >> non-backwards-compatible change?
> > >
> > > Note that this is in the revision history list.
> >
> > I understand. Do you consider changing the revision history a
> > backwards compatible change that clients, servers and tools should
> > reasonably be able to cope with?
> 
> Today we have:
> 
>   ietf-yang-library@2016-06-21:
>      revision 2016-06-21 {
>        description
>          "Initial revision.";
>      }
> 
>   ietf-yang-library@2019-01-04
>      revision 2019-01-04 {
>        description { ... }
>      }
>      revision 2016-04-09 {
>        description
>          "Initial revision.";
>      }
> 
> 
> I don't expect any tool to be able to cope with this in any meaningful
> way.  The only reason we haven't seen this before is that tools don't
> try to use "2016-04-09".
> 
> So yes, I think it is ok to do:
> 
>   ietf-yang-library@202X-XX-XX
>      revision 202X-XX-XX {
>        description { ... }
>      }
>      revision 2019-01-04 {
>        description { ... }
>      }
>      revision 2016-06-21 {
>        description
>          "Initial revision.";
>      }
> 
> (actually, not just "ok", but the right thing to do...)
> 
> 
> 
> /martin
> 
> 
> >
> > >> Anyone might be importing this module by revision, and tools could be
> > >> hardcoded towards the revision date, given that this is a pretty
> > >> fundamental module.
> > >>
> > >> What is the (technical) benefit of changing the date?
> > >
> > > The idea is that if we ever do a new version of this module, we fix
> > > the revision history list in that new version.
> >
> > Yes, the description of the idea was clear. I see some potential
> > trouble doing this, and so far I haven't been able to think of any use
> > case that would benefit from a change. Is there any?
> >
> > Correct information is always nice, but changing module identification
> > data also leads to confusion. I don't think we should change it unless
> > someone can point to some benefits that outweigh the cost.
> >
> > Best Regards,
> > /jan
> >
> >
> > >>> Hi Martin,
> > >>>
> > >>> I agree, hold for doc update seems appropriate.
> > >>>
> > >>> Any other comments?
> > >>>
> > >>> Regards,
> > >>> Rob
> > >>>
> > >>>
> > >>>> -----Original Message-----
> > >>>> From: Martin Björklund <mbj+ietf@4668.se>
> > >>>> Sent: 15 March 2021 09:24
> > >>>> To: rfc-editor@rfc-editor.org
> > >>>> Cc: andy@yumaworks.com; mbj+ietf@4668.se; j.schoenwaelder@jacobs-
> > >>>> university.de; kent+ietf@watsen.net; Rob Wilton (rwilton)
> > >>>> <rwilton@cisco.com>om>; warren@kumari.net; mjethanandani@gmail.com;
> > >>>> netconf@ietf.org
> > >>>> Subject: Re: [netconf] [Technical Errata Reported] RFC8525 (6484)
> > >>>>
> > >>>> Hi,
> > >>>>
> > >>>> Wow, this is obviously a bug.
> > >>>>
> > >>>> I am not sure it can be fixed with an errata however.  Perhaps
> "hold
> > >>>> for document update"?
> > >>>>
> > >>>>
> > >>>> /martin
> > >>>>
> > >>>>
> > >>>> RFC Errata System <rfc-editor@rfc-editor.org> wrote:
> > >>>>> The following errata report has been submitted for RFC8525,
> > >>>>> "YANG Library".
> > >>>>>
> > >>>>> --------------------------------------
> > >>>>> You may review the report below and at:
> > >>>>> https://www.rfc-editor.org/errata/eid6484
> > >>>>>
> > >>>>> --------------------------------------
> > >>>>> Type: Technical
> > >>>>> Reported by: Jernej Tuljak <jernej.tuljak@mg-soft.si>
> > >>>>>
> > >>>>> Section: 4
> > >>>>>
> > >>>>> Original Text
> > >>>>> -------------
> > >>>>>    revision 2016-04-09 {
> > >>>>>      description
> > >>>>>        "Initial revision.";
> > >>>>>      reference
> > >>>>>        "RFC 7895: YANG Module Library";
> > >>>>>    }
> > >>>>>
> > >>>>> Corrected Text
> > >>>>> --------------
> > >>>>>    revision 2016-06-21 {
> > >>>>>      description
> > >>>>>        "Initial revision.";
> > >>>>>      reference
> > >>>>>        "RFC 7895: YANG Module Library";
> > >>>>>    }
> > >>>>>
> > >>>>> Notes
> > >>>>> -----
> > >>>>> Initial revision of ietf-yang-library YANG module was 2016-06-21,
> not
> > >>>> 2016-04-09.
> > >>>>>
> > >>>>> Instructions:
> > >>>>> -------------
> > >>>>> This erratum is currently posted as "Reported". If necessary,
> please
> > >>>>> use "Reply All" to discuss whether it should be verified or
> > >>>>> rejected. When a decision is reached, the verifying party
> > >>>>> can log in to change the status and edit the report, if necessary.
> > >>>>>
> > >>>>> --------------------------------------
> > >>>>> RFC8525 (draft-ietf-netconf-rfc7895bis-07)
> > >>>>> --------------------------------------
> > >>>>> Title               : YANG Library
> > >>>>> Publication Date    : March 2019
> > >>>>> Author(s)           : A. Bierman, M. Bjorklund, J. Schoenwaelder,
> K.
> > >>>> Watsen, R. Wilton
> > >>>>> Category            : PROPOSED STANDARD
> > >>>>> Source              : Network Configuration
> > >>>>> Area                : Operations and Management
> > >>>>> Stream              : IETF
> > >>>>> Verifying Party     : IESG
> > >>>>>
> > >>>>> _______________________________________________
> > >>>>> netconf mailing list
> > >>>>> netconf@ietf.org
> > >>>>> https://www.ietf.org/mailman/listinfo/netconf
> > >>>
> > >>> _______________________________________________
> > >>> netconf mailing list
> > >>> netconf@ietf.org
> > >>> https://www.ietf.org/mailman/listinfo/netconf
> > >>>
> > >>
> >