rib_handle_ifaddr_info
int rib_handle_ifaddr_info(uint32_t fibnum, int cmd, struct rt_addrinfo *info);
return (rib_handle_ifaddr_info(fibnum, cmd, &info));
error = rib_handle_ifaddr_info(ifa->ifa_ifp->if_fib, cmd, &info);
error = rib_handle_ifaddr_info(fibnum, cmd, &info);