To validate that the string you are given actually contains an IP address, you chould/should: 
use Regexp::Common qw /net/;

 if ($givenIP =~/^$RE{net}{IPv4}$/){
   # got good IP.
 }

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     "An undefined problem has an infinite number of solutions." - Robert A. Humphrey         "If you're not part of the solution, you're part of the precipitate." - Henry J. Tillman

In reply to Re: Representing a 32-bit integer by NetWallah
in thread Representing a 32-bit integer by blankdon

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