From owner-freebsd-pf@freebsd.org  Mon Dec 14 20:38:53 2015
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Subject: Re: Unable to upload to S3 when pf is activated
From: murdoch.john@moumantai.de
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Date: Mon, 14 Dec 2015 21:38:51 +0100
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To: Kristof Provost <kp@FreeBSD.org>
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Hi Kristof,

yes, the machine runs on Amazon and yes again -tso fixed the problem.

Could I have seen this somehow watching the pf log? Maybe package =
length?

Thanks you so much. I spent hours tracking this down.

Best,
JOERG



> On 14 Dec 2015, at 21:19, Kristof Provost <kp@FreeBSD.org> wrote:
>=20
>=20
>> On 14 Dec 2015, at 21:04, murdoch.john@moumantai.de wrote:
>> this might sound as a strange question, but when I activate the PF
>> firewall using a minimal rule set (see below), uploading files to
>> AWS S3 becomes impossible.
> ...
>> I am lost. Anyone any ideas.
>=20
> Am I right in assuming that the FreeBSD machine is also running on =
Amazon?
>=20
> There=E2=80=99s a know problem with pf and TSO which manifests (among =
other places) in EC2 instances.
> It=E2=80=99s actually been fixed in stable/10, so the 10.3 release =
will have the fix.
> In 10.2 you can work around the problem by disabling TSO (ifconfig =
foo0 -tso should do the trick).
>=20
> See PR 154428, 193579, 198868 for more information.
>=20
> Regards,
> Kristof
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