nl_cb_set(cbs, NL_CB_VALID, NL_CB_CUSTOM, handle_valid_msg, &map);
nl_cb_set(cbs, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, handle_no_op, NULL);
nl_cb_err(cbs, NL_CB_CUSTOM, handle_error_msg, &map);
nl_cb_set(cbs, NL_CB_VALID, NL_CB_CUSTOM, handle_valid_msg, &map);
nl_cb_set(cbs, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, handle_no_op, NULL);
nl_cb_err(cbs, NL_CB_CUSTOM, handle_error_msg, &map);