--- linux-4.9.37/include/linux/usb/usbnet.h	2017-07-12 16:42:41.000000000 +0300
+++ linux-4.9.y/include/linux/usb/usbnet.h	2021-06-07 13:01:34.000000000 +0300
@@ -204,6 +204,7 @@
 };
 
 extern int usbnet_generic_cdc_bind(struct usbnet *, struct usb_interface *);
+extern int usbnet_ether_cdc_bind(struct usbnet *dev, struct usb_interface *intf);
 extern int usbnet_cdc_bind(struct usbnet *, struct usb_interface *);
 extern void usbnet_cdc_unbind(struct usbnet *, struct usb_interface *);
 extern void usbnet_cdc_status(struct usbnet *, struct urb *);