diff --git a/src/config/vnc_openstack/vnc_openstack/__init__.py b/src/config/vnc_openstack/vnc_openstack/__init__.py
index c899ea97a8a..ca2843daa8d 100644
--- a/src/config/vnc_openstack/vnc_openstack/__init__.py
+++ b/src/config/vnc_openstack/vnc_openstack/__init__.py
@@ -879,7 +879,7 @@ def post_virtual_network_create(self, vn_dict):
                 prefix = subnet_dict['ip_prefix']
                 prefix_len = subnet_dict['ip_prefix_len']
                 network = IPNetwork('%s/%s' % (prefix, prefix_len))
-                subnet_name = vn_dict['uuid'] + ' ' + subnet_dict['ip_prefix'] + '/' + str(
+                subnet_name = vn_dict['uuid'] + ' ' + str(network.ip) + '/' + str(
                     subnet_dict['ip_prefix_len'])
                 subnet_uuid = ipam_subnet['subnet_uuid']
                 self._vnc_lib.kv_store(subnet_uuid, subnet_name)
diff --git a/src/config/vnc_openstack/vnc_openstack/neutron_plugin_db.py b/src/config/vnc_openstack/vnc_openstack/neutron_plugin_db.py
index 3d31048e026..3c393fecd63 100644
--- a/src/config/vnc_openstack/vnc_openstack/neutron_plugin_db.py
+++ b/src/config/vnc_openstack/vnc_openstack/neutron_plugin_db.py
@@ -1428,14 +1428,7 @@ def _subnet_vnc_to_neutron(self, subnet_vnc, net_obj, ipam_fq_name):
         sn_q_dict['cidr'] = cidr
         sn_q_dict['ip_version'] = IPNetwork(cidr).version # 4 or 6
 
-        # read from useragent kv only for old subnets created
-        # before schema had uuid in subnet
         sn_id = subnet_vnc.subnet_uuid
-        if not sn_id:
-            subnet_key = self._subnet_vnc_get_key(subnet_vnc, net_obj.uuid)
-            sn_id = self._subnet_vnc_read_mapping(id=subnet_vnc.subnet_uuid,
-                                                            key=subnet_key)
-
         sn_q_dict['id'] = sn_id
 
         sn_q_dict['gateway_ip'] = subnet_vnc.default_gateway
@@ -2222,8 +2215,7 @@ def _port_check_and_add_iface_route_table(self, fixed_ips, net_obj,
                 host_routes = subnet.get_host_routes()
                 if host_routes is None:
                     continue
-                subnet_key = self._subnet_vnc_get_key(subnet, net_obj.uuid)
-                sn_id = self._subnet_vnc_read_mapping(key=subnet_key)
+                sn_id = subnet.subnet_uuid
                 subnet_cidr = '%s/%s' % (subnet.subnet.get_ip_prefix(),
                                          subnet.subnet.get_ip_prefix_len())
 
@@ -2623,7 +2615,7 @@ def subnet_create(self, subnet_q):
         else:  # virtual-network already linked to this ipam
             for subnet in net_ipam_ref['attr'].get_ipam_subnets():
                 if subnet_key == self._subnet_vnc_get_key(subnet, net_id):
-                    existing_sn_id = self._subnet_vnc_read_mapping(key=subnet_key)
+                    existing_sn_id = subnet.subnet_uuid
                     # duplicate !!
                     msg = _("Cidr %s overlaps with another subnet of subnet %s"
                             ) % (subnet_q['cidr'], existing_sn_id)
@@ -2662,8 +2654,7 @@ def subnet_read(self, subnet_id):
             for ipam_ref in ipam_refs:
                 subnet_vncs = ipam_ref['attr'].get_ipam_subnets()
                 for subnet_vnc in subnet_vncs:
-                    if (self._subnet_vnc_get_key(subnet_vnc, net_id) ==
-                        subnet_key):
+                    if subnet_vnc.subnet_uuid == subnet_id:
                         ret_subnet_q = self._subnet_vnc_to_neutron(
                             subnet_vnc, net_obj, ipam_ref['to'])
                         return ret_subnet_q
@@ -2698,8 +2689,7 @@ def subnet_update(self, subnet_id, subnet_q):
             for ipam_ref in ipam_refs:
                 subnets = ipam_ref['attr'].get_ipam_subnets()
                 for subnet_vnc in subnets:
-                    if self._subnet_vnc_get_key(subnet_vnc,
-                               net_id) == subnet_key:
+                    if subnet_vnc.subnet_uuid == subnet_id:
                         subnet_found = True
                         break
                 if subnet_found:
@@ -2770,8 +2760,7 @@ def subnet_delete(self, subnet_id):
             for ipam_ref in ipam_refs:
                 orig_subnets = ipam_ref['attr'].get_ipam_subnets()
                 new_subnets = [subnet_vnc for subnet_vnc in orig_subnets
-                               if self._subnet_vnc_get_key(subnet_vnc,
-                               net_id) != subnet_key]
+                               if subnet_vnc.subnet_uuid != subnet_id]
                 if len(orig_subnets) != len(new_subnets):
                     # matched subnet to be deleted
                     ipam_ref['attr'].set_ipam_subnets(new_subnets)