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. A very straightforward, short document defining a new value in SIGNATURE_HASH_ALGORITHMS notification of IKE, so that non-hashing signature methods (specifically the Edwards-curve digital signature algorithm) can be used. One nit: s/or/of/ in last sentence of second introduction paragraph, so that it reads, "See section 8.5 of RFC 8032...".