type t = Segment.Tx(Time)(Clock).tval output : ?flags:Segment.tx_flags -> ?options:Options.t list -> t -> Cstruct.t -> unit Lwt.tTx.TXStype t = Segment.Tx(Time)(Clock).tval output : ?flags:Segment.tx_flags -> ?options:Options.t list -> t -> Cstruct.t -> unit Lwt.t