Comment 19 for bug 1815989

Add for #15, we should also skip in neutron/agent/rpc.py for workaround to disable port binding:

diff --git a/neutron/agent/rpc.py b/neutron/agent/rpc.py
index 130b18e..5ee396c 100644
--- a/neutron/agent/rpc.py
+++ b/neutron/agent/rpc.py
@@ -311,13 +311,6 @@ class CacheBackedPluginApi(PluginApi):
         binding = utils.get_port_binding_by_status_and_host(
             port_obj.bindings, constants.ACTIVE, raise_if_not_found=True,
             port_id=port_obj.id)
- if (port_obj.device_owner.startswith(
- constants.DEVICE_OWNER_COMPUTE_PREFIX) and
- binding[pb_ext.HOST] != host):
- LOG.debug("Device %s has no active binding in this host",
- port_obj)
- return {'device': device,
- n_const.NO_ACTIVE_BINDING: True}
         net = self.remote_resource_cache.get_resource_by_id(
             resources.NETWORK, port_obj.network_id)
         net_qos_policy_id = net.qos_policy_id

diff --git a/nova/network/neutronv2/api.py b/nova/network/neutronv2/api.py
index f73fee4..088c3f0 100644
--- a/nova/network/neutronv2/api.py
+++ b/nova/network/neutronv2/api.py
@@ -1226,8 +1226,7 @@ class API(base_api.NetworkAPI):
         :returns: True if the binding-extended API extension is available,
                   False otherwise
         """
- self._refresh_neutron_extensions_cache(context)
- return constants.PORT_BINDING_EXTENDED in self.extensions
+ return False

     def bind_ports_to_host(self, context, instance, host,
                            vnic_type=None, profile=None):