[atlas] Reconnecting probe 3508 - troubleshooting

On 2016/08/22 22:14 , Michael-John Turner wrote:
> The reason why the probe was offline originally was that it stopped
> accepting DHCPOFFERs for some reason, with the result that it would
> continually send DHCPDISCOVERs every few seconds but never ACK an OFFER and
> never connect properly to the network. That seemed to be fixed when I
> powered it on again yesterday but now I see the problem is occurring again
> (it started again as soon as the initial lease it received yesterday
> expired):
> 
> ...
> Aug 22 21:10:18 dreamland dhcpd: DHCPOFFER on 192.168.1.247 to 00:80:a3:91:38:ac via br0
> Aug 22 21:10:21 dreamland dhcpd: DHCPDISCOVER from 00:80:a3:91:38:ac via br0
> Aug 22 21:10:21 dreamland dhcpd: DHCPOFFER on 192.168.1.247 to 00:80:a3:91:38:ac via br0
> ...
> 
> This poor probe seems cursed :( Is there any way to reset it (it's a v1
> probe, according to the Atlas website on firmware 4480)?

One possible explanation is that the probe doesn't actually receive any
packets (i.e. the receive circuitry at the ethernet level is broken).
The only way to know for sure is to open up the probe and attach a
serial console. But I'm not aware of any software failure mode that
leads to this behavior.

Philip