def delete_os_dummy_rtr_nwk(self, rtr_id, net_id, subnet_id):
subnet_lst = set()<EOL>subnet_lst.add(subnet_id)<EOL>ret = self.os_helper.delete_intf_router(None, None, rtr_id, subnet_lst)<EOL>if not ret:<EOL><INDENT>return ret<EOL><DEDENT>return self.os_helper.delete_network_all_subnets(net_id)<EOL>
Delete the dummy interface to the router.