+extern void eth_parse_enetaddr(const char *addr, uchar *enetaddr);
+extern int eth_getenv_enetaddr(char *name, uchar *enetaddr);
+extern int eth_setenv_enetaddr(char *name, const uchar *enetaddr);
+extern int eth_getenv_enetaddr_by_index(int index, uchar *enetaddr);