123.456.789.12
12.345.67.19
12.345.67.18
12.345.66.20

##</code><code>##

12.345.66.20
12.345.67.18
12.345.67.19
123.456.789.12

##</code><code>##

#!/usr/bin/perl

open (FILE,"ipsvisiting.txt");
while (<FILE>) {
        $j[$i++] = $_;
}
close FILE;

sub nummer {
        $a <=> $b;
}

@sorted = sort nummer @j;
foreach $s (@sorted) {
        print $s;
}

##</code><code>##

12.345.111.3
12.345.111.26
12.345.111.24
12.345.111.5
12.345.111.4