Make CI_Input:: read-only as well
diff --git a/system/core/Input.php b/system/core/Input.php
index be9f3c1..6be4b9a 100644
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -55,7 +55,7 @@
 	 *
 	 * @var	string
 	 */
-	public $ip_address = FALSE;
+	protected $ip_address = FALSE;
 
 	/**
 	 * Allow GET array flag
@@ -878,6 +878,10 @@
 			isset($this->_raw_input_stream) OR $this->_raw_input_stream = file_get_contents('php://input');
 			return $this->_raw_input_stream;
 		}
+		elseif ($name === 'ip_address')
+		{
+			return $this->ip_address;
+		}
 	}
 
 }