uword unformat_ip_address (unformat_input_t * input, va_list * args);
u8 *format_ip_prefix (u8 * s, va_list * args);
uword unformat_ip_prefix (unformat_input_t * input, va_list * args);
-u8 *format_mac_address (u8 * s, va_list * args);
-uword unformat_mac_address (unformat_input_t * input, va_list * args);
u16 ip4_address_size_to_put ();
u16 ip6_address_size_to_put ();