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 adds source port information to Abuse Reporting Format. This seems useful. The security considerations refer to RFC 5965 (ARF) and RFC 6302, which seems sufficient. Thanks, Joe