From fc094655080955f7bfcb628b544d131145830b67 Mon Sep 17 00:00:00 2001
From: "Sean M. Collins" <sean_collins2@cable.comcast.com>
Date: Tue, 9 Dec 2014 11:36:53 -0700
Subject: [PATCH] Generate an IPv6 address when PUBLIC_BRIDGE does not have one

Closes-Bug: #1400823
Change-Id: Ic79fd003aea2af7b258397ec2cdfd70c8568743c
---
 lib/neutron | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/neutron b/lib/neutron
index 5a2bfea801..c1311db1e0 100644
--- a/lib/neutron
+++ b/lib/neutron
@@ -1177,6 +1177,12 @@ function _neutron_configure_router_v6 {
         # and then on to recover the public bridge's link local address
         sudo sysctl -w net.ipv6.conf.${PUBLIC_BRIDGE}.disable_ipv6=1
         sudo sysctl -w net.ipv6.conf.${PUBLIC_BRIDGE}.disable_ipv6=0
+        if ! ip -6 addr show dev $PUBLIC_BRIDGE | grep 'scope global'; then
+            # Create an IPv6 ULA address for PUBLIC_BRIDGE if one is not present
+            IPV6_BRIDGE_ULA=`uuidgen | sed s/-//g | cut -c 23- | sed -e "s/\(..\)\(....\)\(....\)/\1:\2:\3/"`
+            sudo ip -6 addr add fd$IPV6_BRIDGE_ULA::1 dev $PUBLIC_BRIDGE
+        fi
+
         if is_neutron_ovs_base_plugin && [[ "$Q_USE_NAMESPACE" = "True" ]]; then
             local ext_gw_interface=$(_neutron_get_ext_gw_interface)
             local ipv6_cidr_len=${IPV6_PUBLIC_RANGE#*/}