commit 6cddf5193149ae8a072e8e0c9bf4a97cab3feb62
author Erik Kline <ek@google.com> Tue Aug 09 15:28:42 2016 +0900
committer Lorenzo Colitti <lorenzo@google.com> Tue Oct 25 17:52:49 2016 +0900
tree 44ee02ce0462dea01f2f808cb8e07d09142e6309
parent cc4f273830144d415cfba01d65314606c444577d

Disable DAD for downstream interfaces when tethering

Bug: 30298058

(cherry picked from commit 59d8c48cee74679d2305c535ab61d4a6f8258c64)

Change-Id: I60929eecf4a890b9c23bf1ba1ba5273db3ccb493

server/TetherController.cpp

diff --git a/server/TetherController.cpp b/server/TetherController.cpp
index 971104f..6617c6a 100644
--- a/server/TetherController.cpp
+++ b/server/TetherController.cpp
@@ -65,11 +65,15 @@
 bool configureForIPv6Router(const char *interface) {
     return (InterfaceController::setEnableIPv6(interface, 0) == 0)
             && (InterfaceController::setAcceptIPv6Ra(interface, 0) == 0)
+            && (InterfaceController::setAcceptIPv6Dad(interface, 0) == 0)
+            && (InterfaceController::setIPv6DadTransmits(interface, "0") == 0)
             && (InterfaceController::setEnableIPv6(interface, 1) == 0);
 }
 
 void configureForIPv6Client(const char *interface) {
     InterfaceController::setAcceptIPv6Ra(interface, 1);
+    InterfaceController::setAcceptIPv6Dad(interface, 1);
+    InterfaceController::setIPv6DadTransmits(interface, "1");
     InterfaceController::setEnableIPv6(interface, 0);
 }