From 0a0e1dcdc6960c4206f659f5b9ae5663d90f653d Mon Sep 17 00:00:00 2001
From: Erik Kline <ek@google.com>
Date: Wed, 13 Apr 2016 19:41:43 +0900
Subject: [PATCH] Also consider loss of IPv6 default route to be fatal

Bug: 27962810
Change-Id: I735d71ddc71da701eebbb9969f6e1cbffd7e1a1c
---
 services/net/java/android/net/ip/IpManager.java | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/services/net/java/android/net/ip/IpManager.java b/services/net/java/android/net/ip/IpManager.java
index b6ad25b147a24..c716cc843451a 100644
--- a/services/net/java/android/net/ip/IpManager.java
+++ b/services/net/java/android/net/ip/IpManager.java
@@ -536,6 +536,16 @@ public class IpManager extends StateMachine {
             delta = ProvisioningChange.LOST_PROVISIONING;
         }
 
+        // Additionally:
+        //
+        // If the previous link properties had a global IPv6 address and an
+        // IPv6 default route then also consider the loss of that default route
+        // to be a loss of provisioning. See b/27962810.
+        if (oldLp.hasGlobalIPv6Address() && oldLp.hasIPv6DefaultRoute() &&
+                !newLp.hasIPv6DefaultRoute()) {
+            delta = ProvisioningChange.LOST_PROVISIONING;
+        }
+
         return delta;
     }