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 is: Ready This document assigns some code points in an IANA maintained table for the purpose of more efficiently compressing messages sent over Low Power and Lossy Networks. It does not define any new compression formats; it just allocates code points for future use when those compression formats are defined. As such, there really are no security considerations. The document contains a security considerations section that refers users to two related RFCs. Sent from Outlook