[bug-inetutils] Ping: checking for root permissions.

[Debarshi 'Rishi' Ray]

The documentation marks certain options with a *, which are apparently
meant to be run only as root user. Accordingly the code does the
necessary validation. However apart from '-V', '-L' and '-h' every
other invocation for ping will make a call to the ping_init, which
always needs root permissions to open the socket.

Thus both 'ping --echo <ip>' and 'ping --address <ip>' need root permissions.

So what is so special about these * marked options?

Happy hacking,
Debarshi
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