K 10
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V 7
git2svn
K 8
svn:date
V 27
2021-07-14T07:45:41.553257Z
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V 507
tcp: tolerate missing timestamps

Some TCP stacks negotiate TS support, but do not send TS at all
or not for keep-alive segments. Since this includes modern widely
deployed stacks, tolerate the violation of RFC 7323 per default.

Reviewed by:		rgrimes, rrs, rscheff
Differential Revision:	https://reviews.freebsd.org/D30740
Sponsored by:		Netflix, Inc.

(cherry picked from commit 870af3f4dc57a6bbfc03f6a49ca0d5b7ff1b975a)

Git Hash:   b9dc1285979058cb2751675d926a773513e83fc8
Git Author: tuexen@FreeBSD.org
END