- mpls_sw_interface_enable_disable(&mpls_main, sw_if_index, enable, 0);
+ rv = mpls_sw_interface_enable_disable(&mpls_main, sw_if_index, enable, 0);
+
+ if (VNET_API_ERROR_NO_SUCH_FIB == rv)
+ error = clib_error_return (0, "default MPLS table must be created first");