From cbdcd3ebc30981231c8c40daacea0b92bcc4017f Mon Sep 17 00:00:00 2001
From: "Stephen A. Zarkos" <stephen.zarkos@microsoft.com>
Date: Wed, 27 Apr 2016 17:19:21 -0700
Subject: [PATCH] Don't set default gateway if one exists

---
 waagent | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/waagent b/waagent
index 1850e43..9d6cbef 100644
--- a/waagent
+++ b/waagent
@@ -6107,8 +6107,13 @@ class Agent(Util):
                     gateway = self.UnpackBigEndian(receiveBuffer, i + 2, 4)
                     IpAddress = self.IntegerToIpAddressV4String(gateway)
                     if option == 3:
-                        self.SetDefaultGateway(gateway)
                         name = "DefaultGateway"
+                        try:
+                            defaultgw = FindStringInFile('/proc/net/route', 'eth\d[\s]+00000000')
+                            if not defaultgw:
+                                self.SetDefaultGateway(gateway)
+                        except:
+                            pass
                     else:
                         endpoint = IpAddress
                         name = "Azure wire protocol endpoint"