exception ParseError of string * string * string;; type t = { net_device_dev_addr : string; net_device_name : string };; type kernel_version = string;; val net_device_known : kernel_version -> bool;; val net_device_size : kernel_version -> int;; val net_device_of_bits : kernel_version -> Bitstring.bitstring -> t;; val get_net_device : kernel_version -> ('a, 'b, [ | `HasMapping ]) Virt_mem_mmap.t -> Virt_mem_mmap.addr -> t;;