Vista doesn't ack dhcp offer

Doug Tucker tuckerd at
Fri Sep 21 14:47:05 UTC 2007

Kuddos to you, you are somehow correct.  I plugged the affected laptop 
directly into the dhcp server interface, and wallah, got an address. 
Wasn't making sense to me since it was all L2, and, the other dhcp server 
worked fine with this laptop, going through the same router.  Now just 
have to figure out "what" on the network is doing this and how.  Thanks to 
everyone for their time!

On Thu, 20 Sep 2007, David W. Hankins wrote:

> On Thu, Sep 20, 2007 at 04:38:43PM -0500, Doug Tucker wrote:
>> Last ditch effort here, we're going to upgrade the kernel on the box since
>> it has not been done in some time, and hope there is something odd about
>> the existing kernel causing the problem.  I will update tomorrow morning
>> after the upgrade.
> I don't think that will change anything, as I don't think you have
> given any evidence that points to a failure on the debian machine.
> 'dump.txt' shows DHCPOFFERs coming out of the debian box.
> 'client_dump.txt' shows no DHCPOFFERs arriving at the client's
> doorstep.
> There's a black hole somewhere between these two eating the packets.
> The thing to do here is to interpolate through the ethernet path
> between the server and client with a sniffer.  Try in the middle,
> then work towards or away from the server depending on wether you
> see the DHCPOFFERs there.  When you can sniff on two sides of one
> hop and observe the black hole these packets are falling into, you
> will know what device to question, replace, or reconfigure.
> I suspect you will find that it is some device that thinks it is
> doing you a favor - improving security, performance, or both - by
> playing games with what kinds of packet are allowed to be broadcast
> and in what direction.
> -- 
> Ash bugud-gul durbatuluk agh burzum-ishi krimpatul.
> Why settle for the lesser evil?
> -- 
> David W. Hankins	"If you don't do it right the first time,
> Software Engineer		     you'll just have to do it again."
> Internet Systems Consortium, Inc.		-- Jack T. Hankins

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