On 6/26/2017 1:52 AM, Dearlove, Christopher (UK) wrote: > Explicitly reject vs silently ignore. I took the latter to be a an instance of the latter I'm guessing you meant "I took the former as an instance of the latter". > , because I meant explicit in terms of the specification, not the implementation. Wording could obviously have been better. I could see rejection being noisy, silent or somewhere in between. I was working off your term "reject" - which is IMO quite different from "ignore" (more than the difference between "explicitly" and "silently". Reject usually means some other action is taken, e.g., requiring an alert to the user, a change in the protocol state, or a response protocol message. Joe