> On Apr 18, 2018, at 5:03 PM, Richard Barnes <[email protected]> wrote:
>
> The only "reserved" in RFC 5246 is a few code points that are reserved for
> private use. No reserved fields.
The field is NOT reserved, it carries an "extension support lifetime" of
16-bits whose zero value means "DO NOT PIN". Other values will be defined in a
follow-on draft, but clients must interpret those also as zero unless they
implement the other draft.
Therefore, a client implementing this draft has complete semantics for the
field, it explicitly prohibits pinning, which might otherwise happen,
especially if no follow-on document materializes.
--
Viktor.
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