in_route_add
in_route_add(&ppp->ppp_framed_ip_address,
in_route_add(&ppp->snp.snp_addr,
in_route_add(&(SIN(radish->rd_route)->sin_addr),
in_route_add(&snp->snp_addr,
in_route_add(&ppp->
in_route_add(&dest, &mask, &loop, LOOPBACK_IFNAME,
int in_route_add (struct in_addr *, struct in_addr *, struct in_addr *, const char *, uint32_t, int);