extern const struct netdev_class netdev_linux_class;
extern const struct netdev_class netdev_tap_class;
-extern const struct netdev_class netdev_gre_class;
extern const struct netdev_class netdev_patch_class;
-extern const struct netdev_class netdev_patchnew_class;
+extern const struct netdev_class netdev_gre_class;
#ifdef __cplusplus
}