From 474b4e7edf273e50e6a80507966e54726609b1d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=88=98=E5=BD=93=E4=B8=80?= <LeedyPKU@gmail.com>
Date: Tue, 17 Jun 2014 18:00:09 +0800
Subject: [PATCH] fix a bug when ipv6 is enabled and OLDGW gets empty.

---
 chnroutes.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chnroutes.py b/chnroutes.py
index 1053854..65a8659 100755
--- a/chnroutes.py
+++ b/chnroutes.py
@@ -70,7 +70,7 @@ def generate_mac(metric):
     #!/bin/sh
     export PATH="/bin:/sbin:/usr/sbin:/usr/bin"
     
-    OLDGW=`netstat -nr | grep '^default' | grep -v 'ppp' | sed 's/default *\\([0-9\.]*\\) .*/\\1/'`
+    OLDGW=`netstat -nr | grep '^default' | grep -v 'ppp' | sed 's/default *\\([0-9\.]*\\) .*/\\1/' | grep .`
 
     if [ ! -e /tmp/pptp_oldgw ]; then
         echo "${OLDGW}" > /tmp/pptp_oldgw