The answer is given more than once here. But again: 
my %ip_count;

++$ip_count{$_} for (@ipAddresses);

[download]
s$$([},&%#}/&/]+}%&{})*;#$&&s&&$^X.($'^"%]=\&(|?*{%
+.+=%;.#_}\&"^"-+%*).}%:##%}={~=~:.")&e&&s""`$''`"e

In reply to Re: Counting unique instances from Array Sort by Skeeve
in thread Counting unique instances from Array Sort by ewhitt

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