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Date:      Fri, 27 Jan 2006 08:17:05 +1300
From:      Andrew Thompson <thompsa@freebsd.org>
To:        Thiago Damas <tdamas@gmail.com>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: if_bridge hangs ifconfig
Message-ID:  <20060126191705.GB33764@heff.fud.org.nz>
In-Reply-To: <f8e3d83f0601261031v3d03c9f5r@mail.gmail.com>
References:  <f8e3d83f0601260849h6b39cbb2v@mail.gmail.com> <20060126172843.GA33764@heff.fud.org.nz> <f8e3d83f0601261031v3d03c9f5r@mail.gmail.com>

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On Thu, Jan 26, 2006 at 04:31:48PM -0200, Thiago Damas wrote:
> 2006/1/26, Andrew Thompson <thompsa@freebsd.org>:
> > On Thu, Jan 26, 2006 at 02:49:54PM -0200, Thiago Damas wrote:
> > >   I'm having some problems using if_bridge, in FreeBSD 6.0 RELEASE.
> > >   I have the following situation:
> > >
> > >   When using the command "ifconfig bridge0 deletem vr0", its hangs,
> > > and sometimes show the error:
> > > vr0: refusing to decrement non-positive refcount 0for interface flag 256
> >
> > This has been fixed in 6-STABLE and will work in the upcomming 6.1
> > release, see the 2005/11/16 entry in
> >
> > http://www.freebsd.org/releases/6.0R/errata.html
> >
> > I would advise upgrading to RELENG_6.
> >
>
> How can I patch my system, 6.0-RELEASE for only this bug? I want to
> minimize the downtime? Its possible?
 
You can apply this patch

http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/net/if_bridge.c.diff?r1=1.32&r2=1.34

If you are using modules then you dont even need to reboot, patch the
file, make+install /sys/modules/if_bridge, kldunload+kldload.


cheers,
Andrew




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