-val known : kernel_version -> bool;;
-val size : kernel_version -> int;;
-val of_bits : kernel_version -> Bitstring.bitstring -> t;;
-val get :
+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 :