On Mon, 8 Sep 2025, Johan Stenstam wrote:
I would change the SHOULDs in 4.2 and 4.2.1 to MUST unless we can describe 
situations where interop would be better if you don't.

I think MUST is too strong and SHOULD is the right emphasis in this case.

If MUST is too strong, when is it OK not to do that? We're telling people how to interoprate, what should they do?

In 4.2 is it "unless the operator has external knowledge that the endpoint will scan soon"? In 4.2.1 I can't think of plausible situations where you would do something else.

Regards,
John Levine, jo...@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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