hI, I tried to use plugin "negate" with check_icmp but ther is no inversion of result.
I tried like this ./negate --critical=OK --warning=UNKNOWN /usr/lib/nagios/plugins/check_icmp -n 5 -c 400,50% -w 200,20% -H hostaddress the result = CRITICAL - hostaddress: rta nan, lost 100%|rta=0.000ms;200.000;400.000;0; pl=100%;20;50;; rtmax=0.000ms;;;; rtmin=0.000ms;;;; Nota : i have replaced with a valid address of course :-) Normally the result would be OK because my server is down ... Thierry Gicquel