ifpromisc
error = ifpromisc(port->port_ifp, promisc);
error = ifpromisc(d->bd_bif->bif_ifp, 1);
error = ifpromisc(bp->bif_ifp, 1);
error = ifpromisc(bp->bif_ifp, 0);
int ifpromisc(struct ifnet *, int);
(void) ifpromisc(ifs, 0);
error = ifpromisc(ifs, 1);
e = ifpromisc(ifp, pswitch);
error = ifpromisc(ifp_port, promisc ? 1 : 0);
error = ifpromisc(ifp_port, 0);
if ((error = ifpromisc(ifp, 1))) {
ifpromisc(ifp, 0);