diff --git a/ironic/common/neutron.py b/ironic/common/neutron.py
index 3ab23424ba..df5b5bd7a8 100644
--- a/ironic/common/neutron.py
+++ b/ironic/common/neutron.py
@@ -345,7 +345,8 @@ def add_ports_to_network(task, network_uuid, security_groups=None):
                 wait_for_host_agent(
                     client, update_port_attrs['binding:host_id'])
             port = client.create_port(**port_attrs)
-            update_neutron_port(task.context, port.id, update_port_attrs)
+            port = update_neutron_port(task.context, port.id,
+                                       update_port_attrs)
             if CONF.neutron.dhcpv6_stateful_address_count > 1:
                 _add_ip_addresses_for_ipv6_stateful(task.context, port, client)
             if is_smart_nic:
diff --git a/ironic/tests/unit/common/test_neutron.py b/ironic/tests/unit/common/test_neutron.py
index 900049df69..7dc67ab329 100644
--- a/ironic/tests/unit/common/test_neutron.py
+++ b/ironic/tests/unit/common/test_neutron.py
@@ -290,11 +290,13 @@ class TestNeutronNetworkActions(db_base.DbTestCase):
                 fixed_ips=[])
             self.client_mock.create_port.side_effect = [self.neutron_port,
                                                         neutron_port2]
+            update_mock.side_effect = [self.neutron_port, neutron_port2]
             expected = {port.uuid: self.neutron_port.id,
                         port2.uuid: neutron_port2.id}
 
         else:
             self.client_mock.create_port.return_value = self.neutron_port
+            update_mock.return_value = self.neutron_port
             expected = {port.uuid: self.neutron_port['id']}
 
         with task_manager.acquire(self.context, self.node.uuid) as task:
@@ -458,6 +460,7 @@ class TestNeutronNetworkActions(db_base.DbTestCase):
         vpi_mock.return_value = True
         # Ensure we can create ports
         self.client_mock.create_port.return_value = self.neutron_port
+        update_mock.return_value = self.neutron_port
         expected = {port.uuid: self.neutron_port.id}
         with task_manager.acquire(self.context, self.node.uuid) as task:
             ports = neutron.add_ports_to_network(task, self.network_uuid)
@@ -492,6 +495,7 @@ class TestNeutronNetworkActions(db_base.DbTestCase):
         )
         self.client_mock.create_port.side_effect = [
             self.neutron_port, openstack_exc.OpenStackCloudException]
+        update_mock.return_value = self.neutron_port
         with task_manager.acquire(self.context, self.node.uuid) as task:
             neutron.add_ports_to_network(task, self.network_uuid)
             self.assertIn("Could not create neutron port for node's",
@@ -999,6 +1003,7 @@ class TestNeutronNetworkActions(db_base.DbTestCase):
 
         # Ensure we can create ports
         self.client_mock.create_port.return_value = self.neutron_port
+        update_mock.return_value = self.neutron_port
         expected = {port.uuid: self.neutron_port.id}
         with task_manager.acquire(self.context, self.node.uuid) as task:
             ports = neutron.add_ports_to_network(task, self.network_uuid)
diff --git a/releasenotes/notes/fix-ipv6-provisioning-routed-provider-network-bbd0c46559f618ac.yaml b/releasenotes/notes/fix-ipv6-provisioning-routed-provider-network-bbd0c46559f618ac.yaml
new file mode 100644
index 0000000000..beb270f611
--- /dev/null
+++ b/releasenotes/notes/fix-ipv6-provisioning-routed-provider-network-bbd0c46559f618ac.yaml
@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixed an issue where provisioning/cleaning would fail on IPv6 routed provider
+    networks. See bug:
+    `2009773 <https://storyboard.openstack.org/#!/story/2009773>`_.