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Date:      Wed, 18 Jun 2008 17:32:02 +0200
From:      Kris Kennaway <kris@FreeBSD.org>
To:        Dave Robison <dave@pioneerspirits.com>
Cc:        freebsd-net@freebsd.org
Subject:   Re: NAT crashing FreeBSD 7.x
Message-ID:  <48592A72.6050903@FreeBSD.org>
In-Reply-To: <48582132.7040103@pioneerspirits.com>
References:  <48582132.7040103@pioneerspirits.com>

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Dave Robison wrote:
> Hiya,
> 
> I posted this to -questions but didn't get any responses so I'm posting 
> it again here.
> 
> I'm having problems with NAT crashing my FreeBSD box. This never 
> happened in 6.x but in 7.x it's predictable for me. Any time I use 
> either of my two NICs for my internal net my FreeBSD box hangs and 
> requires power cycling to reboot.

Take a look at the chapter on kernel debugging in the developers 
handbook.  Add WITNESS to your kernel, then provoke the bug.  If it 
doesn't catch any locking problems, follow the instructions about using 
DDB to collect debugging information.

Kris




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