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 review comments. This document specifies the mapping rules for translating the YANG data modeling language to the Document Schema Definition Languages (DSDL), a set of XML scheme languages. The security considerations section seems sufficient. I do not see the need for any changes. Brian