[netmod] [Technical Errata Reported] RFC7950 (6031)

RFC Errata System <rfc-editor@rfc-editor.org> Fri, 27 March 2020 10:18 UTC

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Subject: [netmod] [Technical Errata Reported] RFC7950 (6031)
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The following errata report has been submitted for RFC7950,
"The YANG 1.1 Data Modeling Language".

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You may review the report below and at:
https://www.rfc-editor.org/errata/eid6031

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Type: Technical
Reported by: Radek Krejci <rkrejci@cesnet.cz>

Section: 9.9.3

Original Text
-------------
The "require-instance" statement, which is a substatement to the 
"type" statement, MAY be present if the type is "instance-identifier"
or "leafref".  It takes as an argument the string "true" or "false".
If this statement is not present, it defaults to "true".

Corrected Text
--------------
The "require-instance" statement, which is a substatement to the
"type" statement, MAY be present if the type is "instance-identifier",
"leafref" or a type derived from them. It takes as an argument the
string "true" or "false". If this statement is not present, it defaults
to "true".

Notes
-----
As discussed in https://mailarchive.ietf.org/arch/browse/netconf/?gbt=1&index=p_zRKwQ6TBxTuCDPc5wJbdZgWTcgWTc, authors expect that the require-instance statement is available not only for leafref and instance-identifier types, but also for all the types derived from them using typedef statement. Since no one argued against this understanding, this errata changes the text to the same form as in other restrictions applicable to derived types.

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RFC7950 (draft-ietf-netmod-rfc6020bis-14)
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Title               : The YANG 1.1 Data Modeling Language
Publication Date    : August 2016
Author(s)           : M. Bjorklund, Ed.
Category            : PROPOSED STANDARD
Source              : Network Modeling
Area                : Operations and Management
Stream              : IETF
Verifying Party     : IESG