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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=217637

--- 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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