Hi Kenneth, OPS-DIR, This is an OPS-DIR review of the subject draft. https://tools.ietf.org/html/draft-murchison-webdav-prefer-12 Please treat these comments as you would any other Last Call comments. This draft proposes to update the recently approved HTTP prefer header field, allowing a WebDAV client to request specific server behaviors in response to a request, and defines the "depth-noroot" preference. For folks unfamiliar with WebDAV and its history (as I was), there is good background here: https://en.wikipedia.org/wiki/WebDAV Since the protocol extensions described here are limited to WebDAV clients and servers, the proposals appear to improve the efficiency of the protocol, each of the proposals is supported by examples, and there is extensive implementation experience described in Section 5, I don't foresee any new issues for network operations from deployment of this update. Summary: Ready regards, Al