Last Call Review of draft-ietf-detnet-tsn-vpn-over-mpls-05
review-ietf-detnet-tsn-vpn-over-mpls-05-secdir-lc-nystrom-2021-02-11-00

 I have reviewed this document as part of the security directorate's
ongoing effort to review all IETF documents being processed by the IESG.
These comments were written primarily for the benefit of the security area
directors.  Document editors and WG chairs should treat these comments just
like any other last call comments.

This document describes a deterministic network data plane when
time-sensitive networks are interconnected.

The security considerations section seems adequate though the integration
of a protocol (TSN) on top of another protocol (DetNet/MPLS) sometimes can
yield new results so it is just a question to the authors if  no new
security consideration results from the application of TSN over DetNet/MPLS?

Editorial:

   - "TSN" is used as an acronym in the abstract as is DetNet (and MPLS,
   although that is perhaps more common knowledge). Would be goot to spell out
   these acronyms directly in the abstract.
   - Section 6, "challanges" -> "challenges"
   - Section 6, "are member" -> "are members"

Thanks,
-- Magnus