inet_net_satop
inet_net_satop(af, ndst, plen, ip, sizeof(ip));
inet_net_satop(af, rt_key(rt), plen, ip, sizeof(ip));
inet_net_satop(af, dst, plen, ip, sizeof(ip));
inet_net_satop(af, dst, plen, ip, sizeof(ip));
inet_net_satop(af, rt_key(nrt), plen, ip, sizeof(ip));
inet_net_satop(af, rt_key(rt), plen, ip0, sizeof(ip0));
inet_net_satop(af, dst, plen, ip, sizeof(ip));
inet_net_satop(af, rt_key(rt), rt_plen(rt), dest, sizeof(dest));
inet_net_satop(af, rt_key(rt), rt_plen(rt), dest, sizeof(dest));
char *inet_net_satop(sa_family_t, struct sockaddr *, int, char *, size_t);