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Date:      Tue, 11 Oct 2016 16:47:47 +0200
From:      "Kristof Provost" <kp@FreeBSD.org>
To:        "Kamil Choudhury" <Kamil.Choudhury@anserinae.net>
Cc:        "freebsd-pf@freebsd.org" <freebsd-pf@freebsd.org>
Subject:   Re: Slow NAT on 10.3-RELEASE
Message-ID:  <5D92FF1D-F24C-465D-9502-B6D9A7276628@FreeBSD.org>
In-Reply-To: <F9A7386EC2A26E4293AF13FABCCB32B3032E2813BF@janus.anserinae.net>
References:  <F9A7386EC2A26E4293AF13FABCCB32B3032E2813BF@janus.anserinae.net>

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On 11 Oct 2016, at 10:34, Kamil Choudhury wrote:
> I've seen some mention of checksum issues on NAT limiting performance, 
> but that
> seems to have been fixed as of 10.2 in an errata. Have I stumbled upon 
> an actual
> problem, or have I misconfigured something?
>
It’s worth trying the workaround (i.e. disable all checksum offloading 
on your
interfaces).

I’ve had at least one bug report indicating that the checksum patch is 
not 100%
correct, but I’ve not had the time to investigate that in-depth.

What virtualisation system are you using?

Regards,
Kristof



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