[mrtg] MRTG got undef from extrenal script

Pavel Ruzicka pavouk at pavouk.org
Mon Jun 30 10:10:57 CEST 2014

Hi Petr,

I had sometimes troubles with DNS requests where DNS server was under
DDOS attack. I am running DNS now locally on the server.

Another source of troubles are SNMP timeouts where CPU of routers is 

Best regards,


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