| line | !l | l&&!r | l&&r | condition | 
 
| 98 | 0 | 0 | 4 | $_ <= 255 and $_ >= 0 | 
 
| 137 | 0 | 0 | 31 | defined $net and defined $bits | 
 
| 366 | 26 | 19 | 3 | $checksub and defined $node->[$bit] | 
 
|  | 45 | 1 | 2 | $checksub and defined $node->[$bit] and 'Net::CIDR::Lookup' eq ref $node->[$bit] | 
 
| 374 | 48 | 0 | 0 | not @node_stack and defined $$node[$bit ^ 1] | 
 
|  | 48 | 0 | 0 | not @node_stack and defined $$node[$bit ^ 1] and $$node[$bit ^ 1] eq $val | 
 
| 380 | 0 | 23 | 29 | defined $node and defined $$node->[0] | 
 
|  | 23 | 9 | 20 | defined $node and defined $$node->[0] and defined $$node->[1] | 
 
|  | 32 | 16 | 4 | defined $node and defined $$node->[0] and defined $$node->[1] and $$node->[0] eq $$node->[1] | 
 
| 487 | 21 | 16 | 128 | $ix2 <= $ix1 and not $start & 1 << $ix2 | 
 
|  | 37 | 1 | 127 | $ix2 <= $ix1 and not $start & 1 << $ix2 and $end & 1 << $ix2 |