+/**
+ * @brief Walk the IP4 mfib table.
+ *
+ * @param mfib the table to walk
+ * @param fn The function to invoke on each entry visited
+ * @param ctx A context passed in the visit function
+ */
+extern void ip4_mfib_table_walk(ip4_mfib_t *mfib,
+ mfib_table_walk_fn_t fn,
+ void *ctx);
+
+/**
+ * @brief format (display) the memory usage for IP4 mfibs
+ */
+extern u8 * format_ip4_mfib_table_memory(u8 * s, va_list * args);