From 397c61f6bf1bed6cdb6a5dc77bfd155f71119834 Mon Sep 17 00:00:00 2001
From: Joshua Boniface <joshua@boniface.me>
Date: Tue, 27 Nov 2018 22:19:14 -0500
Subject: [PATCH] Disable DAD on bridge NICs

---
 node-daemon/pvcd/VXNetworkInstance.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/node-daemon/pvcd/VXNetworkInstance.py b/node-daemon/pvcd/VXNetworkInstance.py
index 007e8c54..251fe3d3 100644
--- a/node-daemon/pvcd/VXNetworkInstance.py
+++ b/node-daemon/pvcd/VXNetworkInstance.py
@@ -399,6 +399,12 @@ add rule inet filter forward ip6 saddr {netaddr6} counter jump {vxlannic}-out
                 self.bridge_nic
             )
         )
+        common.run_os_command(
+            # Disable IPv6 DAD on bridge NICs
+            'sysctl net.ipv6.conf.{}.accept_dad=0'.format(
+                self.bridge_nic
+            )
+        )
 
     def createFirewall(self):
         # For future use