From 90121a7e242137750e1e3046df67de1b7047ec1a Mon Sep 17 00:00:00 2001
From: Yan Xing'an <yanxingan@cmss.chinamobile.com>
Date: Mon, 13 Mar 2017 23:05:06 -0700
Subject: [PATCH] Fix file exists bug when creating network in devstack.

Remove ip addresses before adding an ip address to dev.

Change-Id: I43843bc3cfdf8fe7f8db7a2a46a2b569f36e5607
Closes-Bug: #1672243
---
 devstack/lib/tacker | 1 +
 1 file changed, 1 insertion(+)

diff --git a/devstack/lib/tacker b/devstack/lib/tacker
index 9fe57da97..60c769f76 100644
--- a/devstack/lib/tacker
+++ b/devstack/lib/tacker
@@ -388,6 +388,7 @@ function tacker_create_initial_network {
 
     echo "Assign ip address to BR_MGMT"
     sudo ip link set ${BR_MGMT} up
+    sudo ip -4 address flush dev ${BR_MGMT}
     sudo ip address add ${NETWORK_GATEWAY_MGMT_IP} dev ${BR_MGMT}
 }