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Date:      Tue, 04 Apr 2017 09:56:23 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-net@FreeBSD.org
Subject:   [Bug 217637] One TCP connection accepted TWO times
Message-ID:  <bug-217637-2472-rSnAh2L6jz@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-217637-2472@https.bugs.freebsd.org/bugzilla/>
References:  <bug-217637-2472@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D217637

--- Comment #80 from Michael Tuexen <tuexen@freebsd.org> ---
I put a patch under review: https://reviews.freebsd.org/D10272

If syncookies are used in case of an overflow of the syncache, its usage is
restricted to the case where there was an overflow recently. This mitigates=
 the
problem describe in the PR.

I'm still investing the behaviour in case of close()/shutdown(,SHUT_RD) and
received user data.

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