NETMAP_REQ_OPT_SYNC_KLOOP_MODE
case NETMAP_REQ_OPT_SYNC_KLOOP_MODE:
case NETMAP_REQ_OPT_SYNC_KLOOP_MODE:
opt = nmreq_getoption(hdr, NETMAP_REQ_OPT_SYNC_KLOOP_MODE);
modeopt.nro_opt.nro_reqtype = NETMAP_REQ_OPT_SYNC_KLOOP_MODE;