extern void yang_get_default_string_buf(char *buf, size_t size,
const char *xpath_fmt, ...);
+/* ip prefix */
+extern void yang_str2prefix(const char *value, union prefixptr prefix);
+extern struct yang_data *yang_data_new_prefix(const char *xpath,
+ union prefixconstptr prefix);
+extern void yang_dnode_get_prefix(struct prefix *prefix,
+ const struct lyd_node *dnode,
+ const char *xpath_fmt, ...);
+extern void yang_get_default_prefix(union prefixptr var, const char *xpath_fmt,
+ ...);
+
/* ipv4 */
extern void yang_str2ipv4(const char *value, struct in_addr *addr);
extern struct yang_data *yang_data_new_ipv4(const char *xpath,