extern const struct vport_ops ovs_internal_vport_ops;
extern const struct vport_ops ovs_patch_vport_ops;
extern const struct vport_ops ovs_gre_vport_ops;
-extern const struct vport_ops ovs_gre_ft_vport_ops;
extern const struct vport_ops ovs_gre64_vport_ops;
extern const struct vport_ops ovs_capwap_vport_ops;
extern const struct vport_ops ovs_vxlan_vport_ops;