sc_last_recv      330 net/if_ppp.c       sc->sc_last_sent = sc->sc_last_recv = time_second;
sc_last_recv      574 net/if_ppp.c   	((struct ppp_idle *)data)->recv_idle = t - sc->sc_last_recv;
sc_last_recv     1488 net/if_ppp.c   	    sc->sc_last_recv = time_second;
sc_last_recv     1495 net/if_ppp.c   	sc->sc_last_recv = time_second;
sc_last_recv      114 net/if_pppvar.h 	time_t	sc_last_recv;		/* time (secs) last NP pkt rcvd */