diff --git a/lib/neutron b/lib/neutron
index 1d5502ad8b..1c47829267 100644
--- a/lib/neutron
+++ b/lib/neutron
@@ -165,6 +165,7 @@ function configure_neutron_new {
         iniset $NEUTRON_CORE_PLUGIN_CONF ml2 tenant_network_types vxlan
         iniset $NEUTRON_CORE_PLUGIN_CONF ml2 mechanism_drivers openvswitch,linuxbridge
         iniset $NEUTRON_CORE_PLUGIN_CONF ml2_type_vxlan vni_ranges 1001:2000
+        iniset $NEUTRON_CORE_PLUGIN_CONF ml2_type_flat flat_networks public
         if [[ "$NEUTRON_PORT_SECURITY" = "True" ]]; then
             iniset $NEUTRON_CORE_PLUGIN_CONF ml2 extension_drivers port_security
         fi
@@ -177,10 +178,10 @@ function configure_neutron_new {
 
         # Configure the neutron agent
         if [[ $NEUTRON_AGENT == "linuxbridge" ]]; then
-            iniset $NEUTRON_CORE_PLUGIN_CONF securitygroup iptables
+            iniset $NEUTRON_CORE_PLUGIN_CONF securitygroup firewall_driver iptables
             iniset $NEUTRON_CORE_PLUGIN_CONF vxlan local_ip $HOST_IP
         else
-            iniset $NEUTRON_CORE_PLUGIN_CONF securitygroup iptables_hybrid
+            iniset $NEUTRON_CORE_PLUGIN_CONF securitygroup firewall_driver iptables_hybrid
             iniset $NEUTRON_CORE_PLUGIN_CONF ovs local_ip $HOST_IP
         fi