NOTE_OOB
NOTE_OLDAPI | NOTE_OOB, pkap->pfds,
fflags = NOTE_OLDAPI | NOTE_OOB;
if (kn->kn_sfflags & NOTE_OOB) {
kn->kn_fflags |= NOTE_OOB;
EV_SET(&changelist[0], fd_n, EVFILT_EXCEPT, EV_ADD|EV_ENABLE, NOTE_OOB, 0, NULL);
if (i == 1 && eventlist[0].fflags & NOTE_OOB) {