The system ping typically is suid-root 

$ ls -l `which ping`
-rwsr-xr-x 1 root root 40048 Dec  3  2008 /bin/ping
   ^         ^

[download]

which is why it does work (using 'icmp' method), while your unprivileged script does not.  I don't think you're going to have much luck running this unprivileged.

In reply to Re: why doesn't Net::ping work when native ping does? by Eliya
in thread why doesn't Net::ping work when native ping does? by markseger

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