grepping around I found that there are at least one example of a driver providing a headerless interface. From drivers/net/usb/hso.c : net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST; net->type = ARPHRD_NONE; Do anyone of you know how this is used? Which tools support it? Bjørn -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html