Description:
------------
The name of the input field name gets modified in the $_REQUEST field.

Array
(
    [192_168_0_4] => test
)

should be:
Array ( [192.168.0.4] => test ) 

I don't know if it's a bug, but I can't explain it any further by my knowledge.

Reproduce code:
---------------
<?php
  echo "<pre>";
  print_r($_REQUEST);
  echo "</pre>";
  
  echo "should be:<br>\n";
  print_r(array("192.168.0.4"=>"test"));
?>
<form method="get">
<input name="192.168.0.4" value="test">
</form>


Expected result:
----------------
Array
(
    [192.168.0.4] => test
) 

Actual result:
--------------
Array
(
    [192_168_0_4] => test
)