I have reviewed the document "IS-IS Flooding Scope LSPs" as part of the Operational directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the operational area directors. Document editors and WG chairs should treat these comments just like any other last call comments. This document introduces new IS-IS flooding scope PDUs, and defines new TLVs and sub-TLVs with 16-bit type and length fields. I feel this document is ready for publication, with a note that RFC 4444 (the IS-IS MIB) should probably be updated at some point in the future. Melinda