echoid             53 net/if_sppp.h  	u_char  echoid;         /* id of last keepalive echo request */
echoid           1563 net/if_spppsubr.c 		if (h->ident != sp->lcp.echoid) {
echoid           3942 net/if_spppsubr.c 			sp->lcp.echoid = ++sp->pp_seq;
echoid           3944 net/if_spppsubr.c 				sp->lcp.echoid, 4, &nmagic);