diff --git a/src/config/svc-monitor/svc_monitor/instance_manager.py b/src/config/svc-monitor/svc_monitor/instance_manager.py
index 00601c6a4e7..480d448b54e 100644
--- a/src/config/svc-monitor/svc_monitor/instance_manager.py
+++ b/src/config/svc-monitor/svc_monitor/instance_manager.py
@@ -322,11 +322,11 @@ def validate_network_config(self, st, si):
 
         return config_complete
 
-    def cleanup_svc_vm_ports(self, vmi_list, port_delete=True):
+    def cleanup_svc_vm_ports(self, vmi_list):
         for vmi_id in vmi_list:
             try:
                 vmi_obj = self._vnc_lib.virtual_machine_interface_read(
-                    id=vmi_id, fields=['instance_ip_back_refs'])
+                    id=vmi_id, fields = ['instance_ip_back_refs', 'interface_route_table_refs'])
             except NoIdError:
                 continue
 
@@ -337,11 +337,17 @@ def cleanup_svc_vm_ports(self, vmi_list, port_delete=True):
                 except NoIdError:
                     pass
 
-            if port_delete:
+            try:
+                self._vnc_lib.virtual_machine_interface_delete(id=vmi_id)
+                VirtualMachineInterfaceSM.delete(vmi_id)
+            except (NoIdError, RefsExistError) as e:
+                pass
+
+            for irt in vmi_obj.get_interface_route_table_refs() or []:
                 try:
-                    self._vnc_lib.virtual_machine_interface_delete(id=vmi_id)
-                    VirtualMachineInterfaceSM.delete(vmi_id)
-                except (NoIdError, RefsExistError):
+                    self._vnc_lib.interface_route_table_delete(id=irt['uuid'])
+                    InterfaceRouteTableSM.delete(irt['uuid'])
+                except (NoIdError, RefsExistError) as e:
                     pass
 
     def _check_create_service_vn(self, itf_type, si):
diff --git a/src/config/svc-monitor/svc_monitor/virtual_machine_manager.py b/src/config/svc-monitor/svc_monitor/virtual_machine_manager.py
index 5cbb8eee6ae..e7cc4453f12 100644
--- a/src/config/svc-monitor/svc_monitor/virtual_machine_manager.py
+++ b/src/config/svc-monitor/svc_monitor/virtual_machine_manager.py
@@ -140,13 +140,13 @@ def delete_service(self, vm):
             except Exception as e:
                 self.logger.log_error("%s nova delete failed with error %s" %
                     (vm.uuid, str(e)))
-        else:
-            try:
-                self._vnc_lib.virtual_machine_delete(id=vm.uuid)
-            except NoIdError:
-                pass
-            except RefsExistError:
-                self.logger.log_error("%s vm delete RefsExist" % (vm.uuid))
+
+        try:
+            self._vnc_lib.virtual_machine_delete(id=vm.uuid)
+        except NoIdError:
+            pass
+        except RefsExistError:
+            self.logger.log_error("%s vm delete RefsExist" % (vm.uuid))
 
     def check_service(self, si):
         vm_id_list = list(si.virtual_machines)
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 3028fc63c12..98b925767d5 100644
--- a/src/config/vnc_openstack/vnc_openstack/neutron_plugin_db.py
+++ b/src/config/vnc_openstack/vnc_openstack/neutron_plugin_db.py
@@ -2242,7 +2242,7 @@ def _port_remove_iface_route_table(self, ipobj, subnet_id):
                     port_obj.del_interface_route_table(intf_route_table_obj)
                     self._vnc_lib.virtual_machine_interface_update(port_obj)
                     self._vnc_lib.interface_route_table_delete(id=rt_ref['uuid'])
-                except vnc_exc.NoIdError:
+                except (NoIdError, RefsExistError) as e:
                     pass
 
     def wait_for_api_server_connection(func):
@@ -3595,7 +3595,7 @@ def port_delete(self, port_id):
         for rt_ref in port_obj.get_interface_route_table_refs() or []:
             try:
                 self._vnc_lib.interface_route_table_delete(id=rt_ref['uuid'])
-            except vnc_exc.NoIdError:
+            except (NoIdError, RefsExistError) as e:
                 pass
 
         # delete instance if this was the last port