$network = $network * 256 + $_ foreach(split(/\./, $addr);
can be replaced with
$network = unpack('N', pack('C4', split(/\./, $addr)));
Better yet, use
use Socket qw( inet_aton );
$network = unpack('N', inet_aton($addr));

In reply to Re: String eval is cool by ikegami
in thread String eval is cool by DrHyde

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