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Date:      Sun, 14 Apr 2002 15:44:46 -0700
From:      Terry Lambert <tlambert2@mindspring.com>
To:        Steve Kargl <sgk@troutmask.apl.washington.edu>
Cc:        John Baldwin <jhb@FreeBSD.org>, Glenn Gombert <ggombert@imatowns.com>, freebsd-current@FreeBSD.org, Rasmus Skaarup <mfbsd@skaarup.org>
Subject:   Re: swi_net: unregistered isr number: 18
Message-ID:  <3CBA065E.DD0AA010@mindspring.com>
References:  <3.0.6.32.20020414080107.00da8a48@imatowns.com> <XFMail.20020414090040.jhb@FreeBSD.org> <20020414091256.B61825@troutmask.apl.washington.edu>

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Steve Kargl wrote:
> On Sun, Apr 14, 2002 at 09:00:40AM -0400, John Baldwin wrote:
> > On 14-Apr-2002 Glenn Gombert wrote:
> > > I have seen the same message on a couple FreeBSD systems that I run over
> > > the last several months, but they both seem to be running fine. I was
> > > wondering if it was a 'hack attempt' of somekind over my DSL line....
> >
> > No it's a kernel bug of some sort.  I've only seen it on some test
> > kernels (not CVS kernels) during dhclient on my laptop.
> 
> This only started to happen on my system in the last week.
> I'm using dhclient.  Is the invocation of dhcp in the rc
> script done before the network code is completely set up?

Yes.  And/or someone is spoofing DHCP responses before any request
has been made at all, in order to perform a man in the middle attack.

-- Terry

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