PAP_NAK          3531 net/if_spppsubr.c 			sppp_auth_send(&pap, sp, PAP_NAK, h->ident,
PAP_NAK          3583 net/if_spppsubr.c 	case PAP_NAK:
PAP_NAK          4273 net/if_spppsubr.c 		case PAP_NAK:		return "nak";