LBK_CONNECT_NIXX
if (src == LBK_CONNECT_NIXX(0)) { /* LBK0 */
} else if (src == LBK_CONNECT_NIXX(1)) { /* LBK3 */
if (src == LBK_CONNECT_NIXX(0)) { /* LBK1 */
} else if (src == LBK_CONNECT_NIXX(1)) { /* LBK2 */