[netconf] [Technical Errata Reported] RFC6243 (7426)

RFC Errata System <rfc-editor@rfc-editor.org> Tue, 18 April 2023 12:35 UTC

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Date: Tue, 18 Apr 2023 05:35:49 -0700
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Subject: [netconf] [Technical Errata Reported] RFC6243 (7426)
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The following errata report has been submitted for RFC6243,
"With-defaults Capability for NETCONF".

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You may review the report below and at:
https://www.rfc-editor.org/errata/eid7426

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Type: Technical
Reported by: Dylan Sadoun <dylan.sadoun@orange.com>

Section: 2.3.1

Original Text
-------------
When data is retrieved from a server using the 'explicit' basic mode, and the <with-defaults> parameter is not present, data nodes MUST be reported if explicitly set by the client, even if they contain the schema default value. Non-configuration data nodes containing the schema default value MUST be reported.

Corrected Text
--------------
When data is retrieved from a server using the 'explicit' basic mode, and the <with-defaults> parameter is not present, data nodes MUST be reported if explicitly set. This means that data nodes containing the schema default value MUST be reported if set by a NETCONF client, but MUST NOT be reported if set by the NETCONF server. Data nodes set by the NETCONF server to values other than their schema default values MUST be reported. Non-configuration data nodes containing the schema default value MUST be reported.

Notes
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The RFC defines "Explicitly set data" for the sole purpose of defining the explicit retrieval mode. This definition is clear about when data set by the server should be considered "explicitly set" i.e. when not set to the schema default value. However, the 2.3.1 and 3.3 sections are ambiguous and prone to misunderstanding, as they only emphasise the "set by the client" case, which leads to think that data set by the server to a value different from its schema default value should not be reported.
This erratum is for the 2.3.1 section.

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RFC6243 (draft-ietf-netconf-with-defaults-14)
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Title               : With-defaults Capability for NETCONF
Publication Date    : June 2011
Author(s)           : A. Bierman, B. Lengyel
Category            : PROPOSED STANDARD
Source              : Network Configuration
Area                : Operations and Management
Stream              : IETF
Verifying Party     : IESG