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 allocates a code point for OSPFv3 for MPLS LSP Ping and updates previous allocation to only cover OSPFv2. It also defines behavior when using IPv6 with OSPv3. This is the rereview of the document, and all my comments in previous review were addressed. I think the document is ready.