orig_sum_lsa
lsa = orig_sum_lsa(rte, area, type, rte->invalid);
struct lsa *orig_sum_lsa(struct rt_node *, struct area *, u_int8_t, int);
lsa = orig_sum_lsa(rte, area, type, rte->invalid);
struct lsa *orig_sum_lsa(struct rt_node *, struct area *, u_int8_t, int);
struct lsa *orig_sum_lsa(struct rt_node *, struct area *, u_int8_t, int);
lsa = orig_sum_lsa(&rn, area, LSA_TYPE_SUM_NETWORK, 0);