my @sorted = sort {

	pack('C4' => $a =~ /(\d+)\.(\d+)\.(\d+)\.(\d+)/)
	cmp
	pack('C4' => $b =~ /(\d+)\.(\d+)\.(\d+)\.(\d+)/)

} @unsorted;

##</code><code>##

my @sorted = sort {

	my @a = $a =~ /(\d+)\.(\d+)\.(\d+)\.(\d+)/;
	my @b = $b =~ /(\d+)\.(\d+)\.(\d+)\.(\d+)/;
	
	$a[0] <=> $b[0] || 
	$a[1] <=> $b[1] || 
	$a[2] <=> $b[2] || 
	$a[3] <=> $b[3]

} @unsorted;

##</code><code>##

my @sorted = sort {

	pack('C4' => $a =~ /(\d+)\.(\d+)\.(\d+)\.(\d+)/)
	cmp
	pack('C4' => $b =~ /(\d+)\.(\d+)\.(\d+)\.(\d+)/)

} @unsorted;