fai_add_entry
r = fai_add_entry (result, &ce->addrs6[i], portnum, template);
r = fai_add_entry (result, &ce->addrs4[i], portnum, template);
r = fai_add_entry (result, hp->h_addr_list[i], portnum, template);
ret = fai_add_entry (&res, &addr4, port, &template);