> I certainly recall instances where features were dropped from the Draft > Standard version of a specification precisely because interoperability had not > been demonstrated. As can I on quite a few occasions, but what I cannot provide is any evidence - or even an anecdote - that in the present climate of high scrutiny before getting to proposed, such changes demonstrably improved interoperability and deployability in the field. Now, it is entirely possible and even likely that this practice carries benefits that far outweigh the costs. But we should not assume that's the case jut because unused features offend our design sense. Ned _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf