diff --git a/classes/cluster/virtual-mcp05-ovs/openstack/gateway.yml b/classes/cluster/virtual-mcp05-ovs/openstack/gateway.yml
index 946d1c2..e013d36 100644
--- a/classes/cluster/virtual-mcp05-ovs/openstack/gateway.yml
+++ b/classes/cluster/virtual-mcp05-ovs/openstack/gateway.yml
@@ -23,12 +23,14 @@
           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