IFT_PPP           247 net/if_ppp.c       sc->sc_if.if_type = IFT_PPP;
IFT_PPP           241 net/if_pppoe.c 	sc->sc_sppp.pp_if.if_type = IFT_PPP;
IFT_PPP           825 net/if_spppsubr.c 	sp->pp_if.if_type = IFT_PPP;