Re: [Technical Errata Reported] RFC9067 (6844)

Alvaro Retana <aretana.ietf@gmail.com> Fri, 11 February 2022 19:02 UTC

From: Alvaro Retana <aretana.ietf@gmail.com>
In-Reply-To: <5DF67773-32E3-4CBC-B838-90BF6F683FC2@cisco.com>
References: <20220210171032.AED5B1BA3B82@rfc-editor.org> <5DF67773-32E3-4CBC-B838-90BF6F683FC2@cisco.com>
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Date: Fri, 11 Feb 2022 20:02:36 +0100
Message-ID: <CAMMESswrCAqsTGbH-z7pGLPw_yExuiwPk9r9v0oA787krzDwsQ@mail.gmail.com>
Subject: Re: [Technical Errata Reported] RFC9067 (6844)
To: "Acee Lindem (acee)" <acee@cisco.com>, "yingzhen.qu@futurewei.com" <yingzhen.qu@futurewei.com>, "martin.vigoureux@nokia.com" <martin.vigoureux@nokia.com>, "yingzhen.ietf@gmail.com" <yingzhen.ietf@gmail.com>, "jefftant.ietf@gmail.com" <jefftant.ietf@gmail.com>, "xufeng.liu.ietf@gmail.com" <xufeng.liu.ietf@gmail.com>, "jgs@juniper.net" <jgs@juniper.net>
Cc: "rtgwg@ietf.org" <rtgwg@ietf.org>, "kris@netedge.plus" <kris@netedge.plus>
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Precedence: list

[Removed RFC Editor.]

Thanks Acee!

I am marking the report as “Hold for Document Update” because the
resolution is not to simply correct the text, but the model requires a
revision.

Thanks!

Alvaro.

On February 11, 2022 at 1:13:11 PM, Acee Lindem (acee) (acee@cisco.com)
wrote:

This is a legitimate problem for 0.0.0.0/0 given that all components of a
list key are required. In the case of a prefix-list, the prefix and mask
length limits are all part of the key and, hence, required. It will need to
be fixed in a BIS version or augmentation allowing separate list dependent
on what is specified (such is done in our Cisco IOS-XE native model):

https://github.com/YangModels/yang/blob/master/vendor/cisco/xe/1771/Cisco-IOS-XE-ip.yang#L2888

It would be nice if YANG supported lists with variable length keys.

Thanks,
Acee

On 2/10/22, 12:10 PM, "RFC Errata System" <rfc-editor@rfc-editor.org>
wrote:

The following errata report has been submitted for RFC9067,
"A YANG Data Model for Routing Policy".

--------------------------------------
You may review the report below and at:
https://www.rfc-editor.org/errata/eid6844

--------------------------------------
Type: Technical
Reported by: Kris Lambrechts <kris@netedge.plus>

Section: 7.2. grouping prefix

Original Text
-------------
leaf mask-length-upper {
type uint8 {
range "1..128";
}

Corrected Text
--------------
leaf mask-length-upper {
type uint8 {
range "0..128";
}

Notes
-----
With the original definition, it is not possible to specify an exact match
for the default routes (0.0.0.0/0 and ::/0) which is a valid use case.

Instructions:
-------------
This erratum is currently posted as "Reported". If necessary, please
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--------------------------------------
RFC9067 (draft-ietf-rtgwg-policy-model-31)
--------------------------------------
Title : A YANG Data Model for Routing Policy
Publication Date : October 2021
Author(s) : Y. Qu, J. Tantsura, A. Lindem, X. Liu
Category : PROPOSED STANDARD
Source : Routing Area Working Group
Area : Routing
Stream : IETF
Verifying Party : IESG

[Technical Errata Reported] RFC9067 (6844) RFC Errata System
Re: [Technical Errata Reported] RFC9067 (6844) Acee Lindem (acee)
Re: [Technical Errata Reported] RFC9067 (6844) Alvaro Retana