vec_foreach (ste_index, ste_to_be_free) \
nat64_db_st_entry_free (thread_index, db, \
pool_elt_at_index(st, ste_index[0])); \
vec_foreach (ste_index, ste_to_be_free) \
nat64_db_st_entry_free (thread_index, db, \
pool_elt_at_index(st, ste_index[0])); \