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SubjectRe: Hang: 2.6.32.4 sky2/DMAR (was [PATCH] sky2: Fix WARNING: at lib/dma-debug.c:902 check_sync)
On 1/22/2010 6:46 PM, Jarek Poplawski wrote:
> On Fri, Jan 22, 2010 at 06:25:12PM -0500, Michael Breuer wrote:
>
>
> You wrote earlier:
>
>> [...] Also, there is always a dhcp exchange of some sort
>> preceding the event.
>>
> So, I'm not sure there was "3) Normal DHCP traffic." if the switch
> could drop DHCP packets in some buggy conditions. Anyway, let's try
> the new one with really "3) Normal DHCP traffic.", I hope.
>
> Jarek P.
>
When the packets were dropped, there was a different sequence in the log
- DISCOVER/OFFER repeated. The "normal" is that the sequence appeared
correct and complete - DISCOVER/OFFER/REQUEST/ACK - or INFORM/ACK (vs.
INFORM repeatedly sans ACK) as the case may be.


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