I have reviewed this document as part of the Operational directorate’s ongoing effort to review all IETF documents being processed by the IESG. These comments were written with the intent of improving the operational aspects of the IETF drafts. Comments that are not addressed in last call may be included in AD reviews during the IESG review. Document editors and WG chairs should treat these comments just like any other last call comments. Summary: This document describes IP fragmentation and explains how it introduces fragility to Internet communication. It also proposes alternatives to IP fragmentation and provides recommendations for developers and network operators. This document is ready from an Ops Directorate viewpoint. Best Regards! -Michael