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Date:      Wed, 1 Jul 2015 23:41:31 +0000
From:      Glen Barber <gjb@FreeBSD.org>
To:        Kurt Lidl <lidl@pix.net>
Cc:        Chris Ross <cross+freebsd@distal.com>, freebsd-stable@freebsd.org
Subject:   Re: New FreeBSD snapshots available: stable/10 (20150625 r284813)
Message-ID:  <20150701234131.GF31841@FreeBSD.org>
In-Reply-To: <55946220.5050109@pix.net>
References:  <20150701001613.GH5423@FreeBSD.org> <55934CFB.7050407@pix.net> <56A9EB91-2F97-4096-99C8-26D3EFC13D2D@distal.com> <20150701023640.GM5423@FreeBSD.org> <29FAA191-D0E5-4127-B016-65B4AE42ABE8@distal.com> <20150701025433.GN5423@FreeBSD.org> <5593D9ED.4080402@pix.net> <55940879.8060604@pix.net> <C6D0BB56-5A08-4C71-B1B1-CC8B38F902D2@distal.com> <55946220.5050109@pix.net>

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On Wed, Jul 01, 2015 at 05:56:48PM -0400, Kurt Lidl wrote:
> On 7/1/15 11:52 AM, Chris Ross wrote:
> >
> >>On Jul 1, 2015, at 11:34, Kurt Lidl <lidl@pix.net> wrote:
> >>I discovered that if I comment out the following lines
> >>from my /etc/rc.conf, the machine boots reliably:
> >>
> >>ifconfig_bge0=3D"DHCP"
> >>ifconfig_bge0_ipv6=3D"inet6 accept_rtadv"
> >>
> >>Of course, with no network connection, it's not a very useful machine,
> >>but this probably is important to know while debugging the cause of
> >>the problem.
> >
> >   I had realized that bringing the interface up was the trigger for the=
 panic.
> >An interesting thing, given the above, would be to note whether using
> >a static IPv4 address (i.e., not DHCP or SYNCDHCP which is what I have),
> >or whether disabling IPv6 or IPv6 accept_rtadv would make any difference.
> >
> >   I=E2=80=99m guessing it won=E2=80=99t matter, but I also have a simil=
ar config in my rc.conf,
> >so testing a wider variety of configs might be of value.
>=20
> To answer the question...
>=20
> If you take out the IPv6 configuration it doesn't panic!
>=20
> (I updated the bug with this information too.)
>=20

Kurt, can you re-enable the ipv6 line in rc.conf(5), and add '-tso6' to
your rc.conf(5) lines?

 ifconfig_bge0=3D"DHCP"
 ifconfig_bge0_ipv6=3D"inet6 accept_rtadv -tso6"

Glen


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