diff --git a/classes/cluster/virtual-mcp-ocata-ovs/openstack/gateway.yml b/classes/cluster/virtual-mcp-ocata-ovs/openstack/gateway.yml
index 8167f96..21a9e47 100644
--- a/classes/cluster/virtual-mcp-ocata-ovs/openstack/gateway.yml
+++ b/classes/cluster/virtual-mcp-ocata-ovs/openstack/gateway.yml
@@ -23,18 +23,21 @@
           mtu: ${_param:interface_mtu}
         primary_interface:
           enabled: true
+          ipflush_onchange: true
           name: ${_param:primary_interface}
           mtu: ${_param:interface_mtu}
           proto: manual
           type: eth
         tenant_interface:
           enabled: true
+          ipflush_onchange: true
           name: ${_param:tenant_interface}
           mtu: ${_param:interface_mtu}
           proto: manual
           type: eth
         external_interface:
           enabled: true
+          ipflush_onchange: true
           name: ${_param:external_interface}
           mtu: ${_param:interface_mtu}
           proto: manual
@@ -75,4 +78,4 @@
           use_interfaces:
           - ${_param:external_interface}
           use_ovs_ports:
-          - float-to-ex
\ No newline at end of file
+          - float-to-ex