diff --git a/lxcbird/README.md b/lxcbird/README.md
index 35ff3d2..64a834c 100644
--- a/lxcbird/README.md
+++ b/lxcbird/README.md
@@ -43,6 +43,7 @@ Here's the `/etc/network/interfaces` of my lxc host, well, almost, since I repla
 
     allow-ovs ovs0
     iface ovs0 inet manual
+        pre-up ovs-vsctl -- --if-exists del-br ovs0
         pre-up ovs-vsctl add-br ovs0
         up ip link set up dev ovs0
         down ip link set down dev ovs0