+patricia_node_t *patricia_new_node(patricia_tree_t *patricia, unsigned char bit,prefix_t *prefix);
+
+int registernodeext(const char *name);
+int findnodeext(const char *name);
+void releasenodeext(int index);
+
+void node_increment_usercount( patricia_node_t *node);
+void node_decrement_usercount( patricia_node_t *node);
+int is_normalized_ipmask( struct irc_in_addr *sin, unsigned char bitlen );
+
+/* alloc */
+void freeprefix (prefix_t *prefix);
+prefix_t *newprefix();
+patricia_node_t *newnode();
+void freenode (patricia_node_t *node);
+