[mpls] Eric Rescorla's No Objection on draft-ietf-mpls-rfc3107bis-02: (with COMMENT)

Eric Rescorla <ekr@rtfm.com> Wed, 02 August 2017 18:16 UTC

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Date: Wed, 02 Aug 2017 11:16:22 -0700
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Subject: [mpls] Eric Rescorla's No Objection on draft-ietf-mpls-rfc3107bis-02: (with COMMENT)
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Eric Rescorla has entered the following ballot position for
draft-ietf-mpls-rfc3107bis-02: No Objection

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Document: draft-ietf-mpls-rfc3107bis-02.txt

S 2.1
I note that you use 255 to mean "any number of labels" and 0 is marked
ignore. Is there a reason not to use 255 as a concrete number and 0
to mean "any number"? This is just for my information.

S 2.3.
      Note that failure to set the S bit in the last label will make it
      impossible to parse the NLRI correctly.  See Section 3 paragraph j
      of [RFC7606] for a discussion of error handling when the NLRI
      cannot be parsed.

It would be helpful if you explicitly said that you parse this value
by reading labels one at a time until you get a non-zero S bit. It's
implicity, but having it be clear would be nice.