-extern rbl_t *rbl_search(rbltree_t *, void *);
-extern rbl_t *rbl_search_closest(rbltree_t *, void *);
+extern void *rbl_search(rbltree_t *, void *);
+extern void *rbl_search_closest(rbltree_t *, void *);
+extern rbl_t *rbl_search_rbl(rbltree_t *, void *);
+extern rbl_t *rbl_search_closest_rbl(rbltree_t *, void *);