+uword
+unformat_vl_api_address_family (unformat_input_t * input,
+ va_list * args)
+{
+ vl_api_address_family_t *af = va_arg (*args, vl_api_address_family_t *);
+
+ if (unformat (input, "ip4") || unformat (input, "ipv4"))
+ *af = clib_host_to_net_u32(ADDRESS_IP4);
+ else if (unformat (input, "ip6") || unformat (input, "ipv6"))
+ *af = clib_host_to_net_u32(ADDRESS_IP6);
+ else
+ return (0);
+
+ return (1);
+}
+