int pppioctl(struct ppp_softc *sc, int cmd, caddr_t data, int flag);
void ppp_restart(struct ppp_softc *sc);
void ppppktin(struct ppp_softc *sc, struct mbuf *m, int lost);
int pppioctl(struct ppp_softc *sc, int cmd, caddr_t data, int flag);
void ppp_restart(struct ppp_softc *sc);
void ppppktin(struct ppp_softc *sc, struct mbuf *m, int lost);