Nagios: /bin/ping CRITICAL - Could not interpret output from ping command

Nagios monitoring for ping may result in the following error

/bin/ping -n -U -w 10 -c 5 localhost
CRITICAL - Could not interpret output from ping command


You can reproduce this by running the command
"/usr/local/nagios/libexec/check_nrpe -H <ipadress to check> -c check_hosts"
from the monitoring server.


A fix for it will just need to change the permission for the file /bin/ping
Check if /bing/ping command is SUID in the server to be monitored, else
chmod u+s /bin/ping