ifpromisc
error = ifpromisc(bp->bif_ifp, 1);
error = ifpromisc(ifp, 0);
error = ifpromisc(d->bd_bif->bif_ifp, 1);
ifpromisc(ifs, 0);
error = ifpromisc(ifs, 1);
int ifpromisc(struct ifnet *, int);
{IFF_PROMISC, ifpromisc},
{ IFF_PROMISC, ifpromisc },
if ((error = ifpromisc(priv->ifp, want)) != 0)
ifpromisc(priv->ifp, 0);
if ((error = ifpromisc(priv->ifp, want)) != 0)
(void)ifpromisc(priv->ifp, 0);
if ((error = ifpromisc(ifp, 1))) {
error = ifpromisc(ifp, 1);
ifpromisc(ifp, 0);