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Date:      Mon, 23 Jul 2012 06:55:19 +0200
From:      "Herbert J. Skuhra" <h.skuhra@gmail.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: Jails on FreeBSD 9.0
Message-ID:  <87y5mbdqko.wl%h.skuhra@gmail.com>
In-Reply-To: <CADfJ1PZuJf0QFoKrZVwQex9oSAOZ-gq3ij5rpfQex8e7qsU1DA@mail.gmail.com>
References:  <87fw8yariq.wl%h.skuhra@gmail.com> <CADfJ1PYDaJ-ogJq8ewvzLk3sCjqrE0bw36grVSAn2_16dZHDhw@mail.gmail.com> <CAPd55qAiWO5eQ=KkweuWir+gD4C1LSSbiky2VgZwiDpwwUyJaw@mail.gmail.com> <CADfJ1Pa1dpZ5StTTrG=8KVnFNzUuK58MhLXrg4prAqq4cKLK2g@mail.gmail.com> <CAMaK76HJfvVpn8qURDoUbBVKsowgrqmO7Nv=VXrtU0Yq4VbohA@mail.gmail.com> <CADfJ1PaaqC6CupoWww5OXy+G1b6jXGadXN+4L63QVPmCwP2Fgg@mail.gmail.com> <CADfJ1PZfTEYFv-zHaW8rdwCaJy8VnwZx_N+CNgCJEzyMsuLNtg@mail.gmail.com> <CADfJ1PZvM35jjnn-TPpCkhDAQkGA8bet5aVHuj__3GqCHEr96g@mail.gmail.com> <CADfJ1PZuJf0QFoKrZVwQex9oSAOZ-gq3ij5rpfQex8e7qsU1DA@mail.gmail.com>

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On Sat, 21 Jul 2012 16:10:56 +0200
"Herbert J. Skuhra" <h.skuhra@gmail.com> wrote:

> On Sat, Jul 21, 2012 at 11:24 AM, Herbert J. Skuhra <h.skuhra@gmail.com> wrote:
> > Hi,
> >
> > ok, this is obviously a pf problem and the reason why the network in
> > the jail doesn't work.
> >
> > ifconfig lo1 create
> > ifconfig lo1 10.0.0.10 netmask 0xffffff00
> > nc -s 10.0.0.10 xx.xx.xx.xx 25
> >
> > With pf: connections fails; server receives SYN-ACK, but nc continues
> > sending SYNs until nc gives up
> >
> > With ipfw: connection OK
> >
> > On my Soekris box at home (9.1-PRERELEASE i386) both ipfw and pf works.
> 
> Could this be a bug in the fxp driver?
> I have a 2nd machine with a fxp nic. Same problem.

Thanks to yongari@ the issue could be resolved on both machines by
disabling receive checksum offloading (ifconfig fxp0 -rxsum).

-- 
Herbert



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