MSU_TRC_CLS
OPLMSU_TRACE(urq, (mblk_t *)node_flag, MSU_TRC_CLS);
if ((op < MSU_TRC_UI) || (op > MSU_TRC_CLS)) {
case MSU_TRC_CLS :
if ((op == MSU_TRC_OPN) || (op == MSU_TRC_CLS)) {