diff --git a/neutron/plugins/ml2/drivers/helpers.py b/neutron/plugins/ml2/drivers/helpers.py
index 9e3d97c861a..f99d32d1961 100644
--- a/neutron/plugins/ml2/drivers/helpers.py
+++ b/neutron/plugins/ml2/drivers/helpers.py
@@ -15,6 +15,7 @@
 
 import functools
 
+from neutron_lib import context
 from neutron_lib.db import api as db_api
 from neutron_lib import exceptions
 from neutron_lib.plugins import constants as plugin_constants
@@ -151,3 +152,10 @@ class SegmentTypeDriver(BaseTypeDriver):
                     return alloc
                 raise db_exc.RetryRequest(
                     exceptions.NoNetworkFoundInMaximumAllowedAttempts())
+
+    @db_api.retry_db_errors
+    def _delete_expired_default_network_segment_ranges(self):
+        ctx = context.get_admin_context()
+        with db_api.CONTEXT_WRITER.using(ctx):
+            filters = {'default': True, 'network_type': self.get_type()}
+            ns_range.NetworkSegmentRange.delete_objects(ctx, **filters)
diff --git a/neutron/plugins/ml2/drivers/type_tunnel.py b/neutron/plugins/ml2/drivers/type_tunnel.py
index fece0fcee7c..9b9e32c6225 100644
--- a/neutron/plugins/ml2/drivers/type_tunnel.py
+++ b/neutron/plugins/ml2/drivers/type_tunnel.py
@@ -163,19 +163,6 @@ class _TunnelTypeDriverBase(helpers.SegmentTypeDriver, metaclass=abc.ABCMeta):
                     range_obj.NetworkSegmentRange(ctx, **res))
                 new_default_range_obj.create()
 
-    @db_api.retry_db_errors
-    def _delete_expired_default_network_segment_ranges(self):
-        ctx = context.get_admin_context()
-        with db_api.CONTEXT_WRITER.using(ctx):
-            filters = {
-                'default': True,
-                'network_type': self.get_type(),
-            }
-            old_default_range_objs = range_obj.NetworkSegmentRange.get_objects(
-                ctx, **filters)
-            for obj in old_default_range_objs:
-                obj.delete()
-
     @db_api.retry_db_errors
     def _get_network_segment_ranges_from_db(self):
         ranges = []
diff --git a/neutron/plugins/ml2/drivers/type_vlan.py b/neutron/plugins/ml2/drivers/type_vlan.py
index 6d16b05ad45..af49d019d49 100644
--- a/neutron/plugins/ml2/drivers/type_vlan.py
+++ b/neutron/plugins/ml2/drivers/type_vlan.py
@@ -77,19 +77,6 @@ class VlanTypeDriver(helpers.SegmentTypeDriver):
                         range_obj.NetworkSegmentRange(ctx, **res))
                     new_default_range_obj.create()
 
-    @db_api.retry_db_errors
-    def _delete_expired_default_network_segment_ranges(self):
-        ctx = context.get_admin_context()
-        with db_api.CONTEXT_WRITER.using(ctx):
-            filters = {
-                'default': True,
-                'network_type': p_const.TYPE_VLAN,
-            }
-            old_default_range_objs = range_obj.NetworkSegmentRange.get_objects(
-                ctx, **filters)
-            for obj in old_default_range_objs:
-                obj.delete()
-
     def _parse_network_vlan_ranges(self):
         try:
             self.network_vlan_ranges = plugin_utils.parse_network_vlan_ranges(