From 7fe43508a40846d1b0ce1ec78d1bf67e9faac8dd Mon Sep 17 00:00:00 2001
From: Jesper Pedersen <zerrvox@gmail.com>
Date: Mon, 15 Jun 2015 09:27:04 +0200
Subject: [PATCH] Added caching of system node information

Applied optimization found in 2.8 for caching of system node information
---
 src/Provider/Node/SystemNodeProvider.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Provider/Node/SystemNodeProvider.php b/src/Provider/Node/SystemNodeProvider.php
index 140ff3b..168d79c 100644
--- a/src/Provider/Node/SystemNodeProvider.php
+++ b/src/Provider/Node/SystemNodeProvider.php
@@ -8,7 +8,12 @@ class SystemNodeProvider implements NodeProviderInterface
 {
     public function getNode()
     {
-        $node = null;
+        static $node = null;
+        
+        if($node !== null) {
+            return $node;
+        }        
+        
         $pattern = '/[^:]([0-9A-Fa-f]{2}([:-])[0-9A-Fa-f]{2}(\2[0-9A-Fa-f]{2}){4})[^:]/';
         $matches = array();