I reviewed the document "Extension Negotiation in Secure Shell (SSH)" (draft-ietf-curdle-ssh-ext-info-10.txt) 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. Intended status: Standards Track Updates: 4252, 4253, 4254 (if approved) Current IESG state: In Last Call (ends 2017-07-30) IANA State: IANA OK - IANA will act upon approval of the document Summary: The document updates RFC 4252, RFC 4253, and RFC 4254 to define a mechanism for SSH clients and servers to exchange information about supported protocol extensions confidentially after SSH key exchange. There are a few nits in the document. ** Obsolete normative reference: RFC 5226 (Obsoleted by RFC8126) The document does not cause any issues related to operations and management and looks ready for publication. Mehmet