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#!/usr/bin/perl -w use strict; ... server 1 10.1.1.1-10.1.1.5 server 2 192.168.1.1-192.168.1.5 server 1 192.168.1.1-192.168.1.2
$VAR1 = { 'server_2' => [ ... '192.168.1.2' ] };