Re: [secdir] Secdir telechat review of draft-ietf-netmod-yang-tree-diagrams-05

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Just saw this didn't get the boilerplate added when posted by the tracker. Please assume it to be there.

On Thu, Jan 25, 2018 at 3:35 PM, Phillip Hallam-Baker <hallam@xxxxxxxxx> wrote:
Reviewer: Phillip Hallam-Baker
Review result: Has Nits

I have reviewed the document and it is generally free of security
considerations as claimed. There are some areas of concern however, the
significance of which may become more apparent as such tools find future use.

As described in the document, the tree diagram format is intended to serve as
an output generated by a tool to aid human interpretation. Thus, a potential
ambiguity can arise if the tool used to generate the format is buggy or if the
document contains schema and presentation data compiled from different versions
of the source.

Specifications using this representation need to make clear which
representation is canonical. Otherwise we end up in a situation in which a
document that has an ambiguity being unfixable by means of issuing an errata
because there is no agreement as to whether the change is breaking or not.

Another issue that is of concern is that even though the format is not intended
to be an input format, there can be no guarantee it will not be used as such.
Indeed it could be argued that a spec that makes use of this format should
encourage this approach so as to detect possible ambiguities.

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