diff --git a/neutron/plugins/ml2/plugin.py b/neutron/plugins/ml2/plugin.py
index b0412464662..3fa8d9bf9ef 100644
--- a/neutron/plugins/ml2/plugin.py
+++ b/neutron/plugins/ml2/plugin.py
@@ -1422,6 +1422,14 @@ class Ml2Plugin(db_base_plugin_v2.NeutronDbPluginV2,
             need_port_update_notify |= self._update_extra_dhcp_opts_on_port(
                 context, id, port, updated_port)
             levels = db.get_binding_levels(session, id, binding.host)
+            # one of the operations above may have altered the model call
+            # _make_port_dict again to ensure latest state is reflected so mech
+            # drivers, callback handlers, and the API caller see latest state.
+            # We expire here to reflect changed relationships on the obj.
+            # Repeatable read will ensure we still get the state from this
+            # transaction in spite of concurrent updates/deletes.
+            context.session.expire(port_db)
+            updated_port.update(self._make_port_dict(port_db))
             mech_context = driver_context.PortContext(
                 self, context, updated_port, network, binding, levels,
                 original_port=original_port)
@@ -1719,6 +1727,9 @@ class Ml2Plugin(db_base_plugin_v2.NeutronDbPluginV2,
                 port['device_owner'] != const.DEVICE_OWNER_DVR_INTERFACE):
                 original_port = self._make_port_dict(port)
                 port.status = status
+                # explicit flush before _make_port_dict to ensure extensions
+                # listening for db events can modify the port if necessary
+                context.session.flush()
                 updated_port = self._make_port_dict(port)
                 network = network or self.get_network(
                     context, original_port['network_id'])
diff --git a/neutron/tests/tempest/api/test_allowed_address_pair.py b/neutron/tests/tempest/api/test_allowed_address_pair.py
index e4c499cf9f6..531378505ac 100644
--- a/neutron/tests/tempest/api/test_allowed_address_pair.py
+++ b/neutron/tests/tempest/api/test_allowed_address_pair.py
@@ -83,7 +83,7 @@ class AllowedAddressPairTestJSON(base.BaseNetworkTest):
         body = self.client.update_port(
             port_id, allowed_address_pairs=allowed_address_pairs)
         allowed_address_pair = body['port']['allowed_address_pairs']
-        self.assertEqual(allowed_address_pair, allowed_address_pairs)
+        self.assertItemsEqual(allowed_address_pair, allowed_address_pairs)
 
     @test.idempotent_id('9599b337-272c-47fd-b3cf-509414414ac4')
     def test_update_port_with_address_pair(self):
diff --git a/neutron/tests/tempest/api/test_revisions.py b/neutron/tests/tempest/api/test_revisions.py
index 10438b72ce0..2d5b965d147 100644
--- a/neutron/tests/tempest/api/test_revisions.py
+++ b/neutron/tests/tempest/api/test_revisions.py
@@ -90,12 +90,7 @@ class TestRevisions(base.BaseAdminNetworkTest, bsg.BaseSecGroupTest):
         self.client.update_port(
             port['id'], security_groups=[sg['security_group']['id']])
         updated = self.client.show_port(port['id'])
-        self.client.update_port(port['id'], security_groups=[])
-        # TODO(kevinbenton): these extra shows after after the update are
-        # to work around the fact that ML2 creates the result dict before
-        # commit happens if the port is unbound. The update response should
-        # be usable directly once that is fixed.
-        updated2 = self.client.show_port(port['id'])
+        updated2 = self.client.update_port(port['id'], security_groups=[])
         self.assertGreater(updated['port']['revision_number'],
                            port['revision_number'])
         self.assertGreater(updated2['port']['revision_number'],
diff --git a/neutron/tests/unit/plugins/ml2/test_plugin.py b/neutron/tests/unit/plugins/ml2/test_plugin.py
index b5cf900dd02..402e7c7349f 100644
--- a/neutron/tests/unit/plugins/ml2/test_plugin.py
+++ b/neutron/tests/unit/plugins/ml2/test_plugin.py
@@ -60,6 +60,7 @@ from neutron.plugins.ml2 import models
 from neutron.plugins.ml2 import plugin as ml2_plugin
 from neutron.services.l3_router import l3_router_plugin
 from neutron.services.qos import qos_consts
+from neutron.services.revisions import revision_plugin
 from neutron.services.segments import db as segments_plugin_db
 from neutron.services.segments import plugin as segments_plugin
 from neutron.tests import base
@@ -1119,6 +1120,30 @@ class TestMl2PortsV2(test_plugin.TestPortsV2, Ml2PluginV2TestCase):
         self.assertTrue(listener.except_raised)
 
 
+class TestMl2PortsV2WithRevisionPlugin(Ml2PluginV2TestCase):
+
+    def setUp(self):
+        super(TestMl2PortsV2WithRevisionPlugin, self).setUp()
+        self.revision_plugin = revision_plugin.RevisionPlugin()
+
+    def test_update_port_status_bumps_revision(self):
+        ctx = context.get_admin_context()
+        plugin = manager.NeutronManager.get_plugin()
+        host_arg = {portbindings.HOST_ID: HOST}
+        with self.port(arg_list=(portbindings.HOST_ID,),
+                       **host_arg) as port:
+            port = plugin.get_port(ctx, port['port']['id'])
+            updated_ports = []
+            receiver = lambda *a, **k: updated_ports.append(k['port'])
+            registry.subscribe(receiver, resources.PORT,
+                               events.AFTER_UPDATE)
+            plugin.update_port_status(
+                ctx, port['id'],
+                constants.PORT_STATUS_ACTIVE, host=HOST)
+            self.assertGreater(updated_ports[0]['revision_number'],
+                               port['revision_number'])
+
+
 class TestMl2PortsV2WithL3(test_plugin.TestPortsV2, Ml2PluginV2TestCase):
     """For testing methods that require the L3 service plugin."""