A simple solution would be to pack the IPs as if you were passing them to the socket routines. In this format the IP will be 4 bytes, where each byte is the numbers from the IP 
use Socket;
@sortedKeys = map { inet_ntoa($_) }
               sort map { inet_aton($_) }
                 keys %hash;

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In reply to Re: Sorting a hash of IP addresses? by gbarr
in thread Sorting a hash of IP addresses? by mnperez

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