ag_check
void ag_check(naddr, naddr, naddr, naddr, char, char, u_int,
ag_check(dst, RT->rt_mask, 0, nhop, metric, pref,
ag_check(0, 0, 0, 0, def_metric, def_metric,
ag_check(RT->rt_dst, RT->rt_mask, RT->rt_gate, 0,