Hi, 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. Message redirection is a basic capability provided by the Diameter base protocol. In its conventional form, message redirection is performed by an application-independent "redirect agent", which returns one or more individual hosts to the message sender as possible destinations of the redirected message. However, in some circumstances an operator may wish to redirect messages to an alternate domain without specifying individual hosts. This document specifies an application-specific mechanism by which that can be achieved. New applications may incorporate this capability by reference to the present document. The Security Considerations section offloads to RFC6733. Other than a bunch of English editorial issues (which I'm sure the RFC Editor will handle) I see no significant issues with this document. -derek -- Derek Atkins 617-623-3745 derek at ihtfp.com www.ihtfp.com Computer and Internet Security Consultant