diff --git a/classes/cluster/virtual-mcp11-ovs-dpdk/openstack/gateway.yml b/classes/cluster/virtual-mcp11-ovs-dpdk/openstack/gateway.yml
index f89cfcf..a6e99c8 100644
--- a/classes/cluster/virtual-mcp11-ovs-dpdk/openstack/gateway.yml
+++ b/classes/cluster/virtual-mcp11-ovs-dpdk/openstack/gateway.yml
@@ -23,6 +23,7 @@
           mtu: ${_param:interface_mtu}
         primary_interface:
           enabled: true
+          ipflush_onchange: true
           name: ${_param:primary_interface}
           mtu: ${_param:interface_mtu}
           proto: manual
@@ -35,6 +36,7 @@
         #   type: eth
         external_interface:
           enabled: true
+          ipflush_onchange: true
           name: ${_param:external_interface}
           mtu: ${_param:interface_mtu}
           proto: manual
@@ -83,4 +85,4 @@
           use_interfaces:
           - ${_param:external_interface}
           use_ovs_ports:
-          - float-to-ex
\ No newline at end of file
+          - float-to-ex