snprintf(str, sizeof(str), "%sx%02x%02x%02x%02x%02x%02x", prefix, a1, a2, a3, a4, a5, a6);
return udev_builtin_add_property(dev, test, "ID_NET_NAME_MAC", str);
snprintf(str, sizeof(str), "%sx%02x%02x%02x%02x%02x%02x", prefix, a1, a2, a3, a4, a5, a6);
return udev_builtin_add_property(dev, test, "ID_NET_NAME_MAC", str);