send_update
send_update(nbr->ei, nbr, 0, &nbr->update_list);
send_update(ei, NULL, 0, &ei->update_list);
void send_update(struct eigrp_iface *, struct nbr *, uint32_t,
send_update(nbr->ei, nbr, EIGRP_HDR_FLAG_INIT, NULL);