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Date:      Sun, 10 Oct 1999 12:04:58 -0400 (EDT)
From:      Jaime Kikpole <jaime@malkav.snowmoon.com>
To:        Jeff Gray <jwg@netbox.com>
Cc:        Questions at FreeBSD <freebsd-questions@FreeBSD.ORG>
Subject:   Re: fixed IP, losing net connection
Message-ID:  <Pine.BSF.4.10.9910101157110.49607-100000@malkav.snowmoon.com>
In-Reply-To: <Pine.BSF.4.10.9910100706210.20725-100000@cm-24-142-61-16.cableco-op.ispchannel.com>

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On Sun, 10 Oct 1999, Jeff Gray wrote:
> If I reboot then connection come back.  Hardy what I wish to do :-)
> 
> Tried killing inetd and restarting the daemon.
> Tried kill -HUP 1
> Neither gets connectivity back.

	Its not a program going crazy, then.  It sounded more like a
cable-modem-company inflicted problem anyway.  I'm on Road Runner at home
and they screw with my IP all the time.  Similar symptoms.  One thing
that's different between us, though, is that they assign me a dynamic IP
via DHCP not a static one.  Is DHCP used in your system anywhere?


> Two questions.
> 
> 1.  How can I get connectivity back without rebooting?
> 
> 2.  Likly cause of this problems?

	Do you still have a link light on your ethernet card when this
problem occurs?  If not, its probably not a FreeBSD problem.  You also
might want to try using ipfw to log traffic coming into your ethernet card
in order to see if anything funny is going on.  To do that, compile the
pseudo device bpf and the options that have "IPFIREWALL" or "IPFILTER" in
them into your kernel.  Then set up some ipfw rules to log the data on
your ethernet card.  By doing this I've found a number of attempts by
script kiddies to use Window vulnerabilities against my system.  :)

						Jaime



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