diff --git a/src/monitoring_experiments.ml b/src/monitoring_experiments.ml
index 1e24a28..7a32bdf 100644
--- a/src/monitoring_experiments.ml
+++ b/src/monitoring_experiments.ml
@@ -204,7 +204,7 @@ jfuLKkCfGcw9A8o=
 |} in
       X509.Encoding.Pem.Certificate.of_pem_cstruct1 data
 
-    let create s ?(port = 8093) ?hostname ?(interval = 10) certificates =
+    let create_tls ?(port = 8093) ?hostname ?(interval = 10) s certificates =
       Metrics.enable_all ();
       let flows = I.create ~interval ?hostname () in
       Lwt.async (L.collect (fun () -> T.sleep_ns (Duration.of_sec interval)));
@@ -217,6 +217,13 @@ jfuLKkCfGcw9A8o=
           TLS.server_of_flow server flow >|= function
           | Ok tls -> I.add_flow flows tls
           | Error e -> Log.err (fun m -> m "TLS error %a" TLS.pp_write_error e))
+
+    module TC = Pull(T)(C)(S.TCPV4)
+    let create_tcp ?(port = 8093) ?hostname ?(interval = 10) s =
+      Metrics.enable_all ();
+      let flows = TC.create ~interval ?hostname () in
+      Lwt.async (L.collect (fun () -> T.sleep_ns (Duration.of_sec interval)));
+      S.listen_tcpv4 s ~port (fun flow -> Lwt.return (TC.add_flow flows flow))
   end
 end
 
diff --git a/src/monitoring_experiments.mli b/src/monitoring_experiments.mli
index ae43e4f..5fc6182 100644
--- a/src/monitoring_experiments.mli
+++ b/src/monitoring_experiments.mli
@@ -38,6 +38,7 @@ module M : sig
   end
 
   module S (T : Mirage_time_lwt.S) (P : Mirage_clock.PCLOCK) (C : Mirage_clock.MCLOCK) (S : Mirage_stack_lwt.V4) : sig
-    val create : S.t -> ?port:int -> ?hostname:string -> ?interval:int -> Tls.Config.own_cert -> unit
+    val create_tls : ?port:int -> ?hostname:string -> ?interval:int -> S.t -> Tls.Config.own_cert -> unit
+    val create_tcp : ?port:int -> ?hostname:string -> ?interval:int -> S.t -> unit
   end
 end