[netmod] [Technical Errata Reported] RFC7317 (6245)

RFC Errata System <rfc-editor@rfc-editor.org> Wed, 29 July 2020 13:32 UTC

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Subject: [netmod] [Technical Errata Reported] RFC7317 (6245)
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The following errata report has been submitted for RFC7317,
"A YANG Data Model for System Management".

--------------------------------------
You may review the report below and at:
https://www.rfc-editor.org/errata/eid6245

--------------------------------------
Type: Technical
Reported by: Maurizio Brigandi' <maurizio.brigandi@sm-optics.com>

Section: 6

Original Text
-------------

         leaf-list user-authentication-order {
           type identityref {
             base authentication-method;
           }
           must '(. != "sys:radius" or ../../radius/server)' 



Corrected Text
--------------

         leaf-list user-authentication-order {
           type identityref {
             base authentication-method;
           }
           must '(not(. = "sys:radius") or ../../radius/server)'
 

Notes
-----
As indicated in https://www.w3.org/TR/1999/REC-xpath-19991116/#booleans

the following expression comparing a node-set with a string

       . != "sys:radius"

is true if at least one node in the node-set satisfies the boolean expression.

This is not the intention of the "must" condition.

It is necessary to use not(. = "sys:radius") to achieve the right intention of the check.

Instructions:
-------------
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--------------------------------------
RFC7317 (draft-ietf-netmod-system-mgmt-16)
--------------------------------------
Title               : A YANG Data Model for System Management
Publication Date    : August 2014
Author(s)           : A. Bierman, M. Bjorklund
Category            : PROPOSED STANDARD
Source              : Network Modeling
Area                : Operations and Management
Stream              : IETF
Verifying Party     : IESG