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Subject: Re: IPV6 TCP6 Slow Connect
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From: Kristof Provost <kp@FreeBSD.org>
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Date: Fri, 12 Feb 2016 15:31:45 +0100
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To: Larry Rosenman <ler@lerctr.org>
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> On 12 Feb 2016, at 15:29, Larry Rosenman <ler@lerctr.org> wrote:
>=20
> On 2016-02-12 08:13, Larry Rosenman wrote:
>>=20
>> sysctl net.inet.tcp.rfc1323=3D0
>> makes it work
> Shouldn't the stack do the right thing here?  For the record, the =
other side
> is also FreeBSD (10.2-STABLE).
>=20
Yes, but it=E2=80=99s possible that there=E2=80=99s a problem with the =
pf scrubbing of the window scaling or timestamp options.

I have a vague recollection of having looked at that in the past.
Bug 172648 also claims there is/was an issue with checksums in that =
case, but I=E2=80=99ve never been able to reproduce it.

Regards,
Kristof=