Date: Fri, 24 May 2013 16:29:26 +0900 (JST) From: Hiroki Sato <hrs@FreeBSD.org> To: pyunyh@gmail.com Cc: jdc@koitsu.org, gjb@FreeBSD.org, freebsd-stable@FreeBSD.org, re@FreeBSD.org Subject: Re: Apparent fxp regression in FreeBSD 8.4-RC3 Message-ID: <20130524.162926.395058052118975996.hrs@allbsd.org> In-Reply-To: <20130524054720.GA1496@michelle.cdnetworks.com> References: <20130524044035.GA40957@icarus.home.lan> <20130524044919.GA41292@icarus.home.lan> <20130524054720.GA1496@michelle.cdnetworks.com>
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YongHyeon PYUN <pyunyh@gmail.com> wrote
in <20130524054720.GA1496@michelle.cdnetworks.com>:
py> On Thu, May 23, 2013 at 09:49:19PM -0700, Jeremy Chadwick wrote:
py> > On Thu, May 23, 2013 at 09:40:35PM -0700, Jeremy Chadwick wrote:
py> > > On Thu, May 23, 2013 at 11:42:44PM -0400, Glen Barber wrote:
py> > > > On Thu, May 23, 2013 at 08:38:06PM -0700, Jeremy Chadwick wrote:
py> > > > > If someone wants me to test DHCP via fxp(4) on the above system (I can
py> > > > > do so with both NICs), just let me know; it should only take me half an
py> > > > > hour or so.
py> > > > >
py> > > > > I'll politely wait for someone to say "please do so" else won't bother.
py> > > > >
py> > > >
py> > > > For the sake of completeness...
py> > > >
py> > > > "Please do so." :)
py> > >
py> > > Issue reproduced 100% reliably, even within sysinstall.
py> > >
py> > > {snip}
py> >
py> > Forgot to add:
py> >
py> > This issue ONLY happens when using DHCP.
py> >
py> > Statically assigning the IP address works fine; fxp0 goes down once,
py> > up once, then stays up indefinitely.
py>
py> I asked Mike to try backing out dhclient(8) change(r247336) but it
py> seems he missed that. Jeremy, could you try that?
py>
py> I guess dhclient(8) does not like flow-control negotiation of
py> fxp(4) after link establishment.
Okay, I could reproduce this issue on my box. After invocation of
dhclient(8), a link is up and then state_reboot() drops the link
establishment. Removing the changes around RTM_IFINFO in r247336
makes it work with no problem.
A workaround is specifying the following line in rc.conf:
ifconfig_fxp0="DHCP media 100baseTX mediaopt full-duplex"
-- Hiroki
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