diff --git a/networking_nec/nwa/l2/utils.py b/networking_nec/nwa/l2/utils.py
index 5c53a9f..85d2d9b 100644
--- a/networking_nec/nwa/l2/utils.py
+++ b/networking_nec/nwa/l2/utils.py
@@ -12,7 +12,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from neutron.db import external_net_db
+from neutron.db.models import external_net as external_net_db
 from neutron.plugins.ml2 import db as db_ml2
 from neutron.plugins.ml2 import driver_api as api
 from neutron_lib import constants
diff --git a/networking_nec/nwa/l3/db_api.py b/networking_nec/nwa/l3/db_api.py
index ae16125..815db13 100644
--- a/networking_nec/nwa/l3/db_api.py
+++ b/networking_nec/nwa/l3/db_api.py
@@ -14,7 +14,7 @@
 
 from sqlalchemy.orm import exc as sa_exc
 
-from neutron.db import l3_db
+from neutron.db.models import l3 as l3_db
 from oslo_log import log as logging
 
 LOG = logging.getLogger(__name__)
diff --git a/networking_nec/nwa/l3/plugin.py b/networking_nec/nwa/l3/plugin.py
index 237fcc1..10f92da 100644
--- a/networking_nec/nwa/l3/plugin.py
+++ b/networking_nec/nwa/l3/plugin.py
@@ -22,8 +22,8 @@ from neutron.common import topics
 from neutron.db import common_db_mixin
 from neutron.db import extraroute_db
 from neutron.db import l3_agentschedulers_db
-from neutron.db import l3_db
 from neutron.db import l3_gwmode_db
+from neutron.db.models import l3 as l3_db
 from neutron.plugins.common import constants
 from neutron.plugins.ml2 import driver_context
 from neutron.services import service_base
@@ -55,7 +55,7 @@ class NECNWAL3Plugin(service_base.ServicePluginBase,
 
     def __init__(self):
         super(NECNWAL3Plugin, self).__init__()
-        l3_db.subscribe()
+        # l3_db.subscribe()
         self.start_rpc_listeners()
         self.nwa_proxies = {}
         self.resource_groups = nwa_com_utils.load_json_from_file(