It's a matter of taste whether http://www.ietf.org/ID-Checklist.html is obscure or not, but it is quite explicit and cites RFC 2434 which is BCP 26. BCP 26 says, among other things: All future RFCs that either explicitly or implicitly rely on the IANA to register or otherwise manage assignments MUST provide guidelines for managing the name space. The IESG operates on this basis. It's true that it isn't enforced at I-D submission time; but it is enforced in IESG review. Brian _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf