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. The document links to two external documents, one dedicated to security considerations for DetNet, the other for DetNet over MPLS, both documents are works in progress. This is a good use of security considerations by reference. For the specific issues regarding MPLS over TSN, the short section provides adequate details.