[Observium] Unable to poll a once working Device

Hi there,

I have multiple environmental Devices which are working fine for years now. A view weeks ago one of was shown as unable to poll. A SNMPwalk for the Device works fine. I've tried to add the device via it's IP no luck there. I've rebooted the Server and the Device multiple times. I flushed the DNS cache.

Attached are the debug Output of a poller run of a working Device poll_tempboxnl.txt and of the non-working Device poll_tempboxnz.txt as well as the discovery and snmpwalk output.

xxx_tempboxnl.txt working. xxx_tempboxnz.txt not working.

Any suggestions are welcome.

Best regards Andras