Last Call Review of draft-ietf-mpls-sfl-control-04
review-ietf-mpls-sfl-control-04-opsdir-lc-jaeggli-2023-12-16-00

I have reviewed draft-ietf-mpls-sfl-control version 4 on behalf of the ops
directorate.

This draft is ready to proceed.

one note on the privacy considerations section

   This privacy threat may
   be mitigated by encrypting the control protocol packets, regularly
   changing the synonymous labels and by concurrently using a number of
   such labels.

So sure, you could do the suggestions beyond first one (securing communications
between devices in a command admin domain if appropriate to circumstnaces seems
prudent), it doesn't seem realistic or likely that operators would go out of
their way to do more than the minimum amount of signaling merely for the
purpose of obfuscation, that's kinda of like adding noise to your IGP on theory
that it's harder to parse out the topology as a result. LSPs are similarly
privacy identifying in terms of describing a path between two end points but
you wouldn't create more of them as a result.