Hi, David,

One suggestion...

On 8/3/2016 5:31 PM, Black, David wrote:
>>>    To avoid unexpected connection resets, TEPs SHOULD support a normal
>>> > >    mode of operation that does not make use of data in SYN-only
>>> > >    segments.  Moreover, implementations SHOULD enable data in SYN-only
>>> > >    segments only if explicitly requested by the application
> Usual IETF practice is to require implementation of mechanisms when there
> are circumstances that require them (to need but not have is bad).  On that
> basis, that first "SHOULD" ought to be a "MUST".
>
> The second sentence would be better phrased as a "MUST" for the
> default configuration - that would allow additional means of turning
> on SYN-only data for an admin who knows what she's doing.  Separate
> requirements about when SYN-only data "SHOULD" or "SHOULD NOT"
> be used would be fine.

FWIW, my usual expectation is that SHOULD/SHOULD NOT always describes
the requirements of an exception. I.e., if there's a reason to give
wiggle room, it should be stated.

Joe

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