Why not MUST? Why leave the door open for some implementations to go withoutdup detection, and have more of these discussions in the future?
OK. Having no more of these discussions is a very persuasive argument :) -- to unsubscribe send a message to radiusext-request@ops.ietf.org with the word 'unsubscribe' in a single line as the message text body. archive: <http://psg.com/lists/radiusext/>