val get_hlen_version : Cstruct.t -> intval set_hlen_version : Cstruct.t -> int -> unitval get_len : Cstruct.t -> intval set_len : Cstruct.t -> int -> unitval get_id : Cstruct.t -> intval set_id : Cstruct.t -> int -> unitval get_off : Cstruct.t -> intval set_off : Cstruct.t -> int -> unitval get_ttl : Cstruct.t -> intval set_ttl : Cstruct.t -> int -> unitval get_proto : Cstruct.t -> intval set_proto : Cstruct.t -> int -> unitval get_checksum : Cstruct.t -> intval set_checksum : Cstruct.t -> int -> unitval get_src : Cstruct.t -> Ipaddr.V4.tval set_src : Cstruct.t -> Ipaddr.V4.t -> unitval get_dst : Cstruct.t -> Ipaddr.V4.tval set_dst : Cstruct.t -> Ipaddr.V4.t -> unit