diff --git a/unikernel/client/README.md b/unikernel/client/README.md
index 87cd2d6..882533f 100644
--- a/unikernel/client/README.md
+++ b/unikernel/client/README.md
@@ -7,11 +7,9 @@ when we want to start an HTTP(S) server.
 
 ### The config.ml
 
-The MirageOS manifest describes 3 things:
+The MirageOS manifest describes 2 things:
 
-- How to make a simple `Paf` module (which provides `request`)
-- How to make a simple `Paf_cohttp` module (which provides `Cohttp_lwt.S.Client`
-  plus _metadata_)
+- How to make a simple `Paf` module (which provides HTTP and HTTPS connections)
 - How to make a simple DNS client (with `ocaml-dns`)
 
 It requires an `uri` argument such as:
diff --git a/unikernel/client/config.ml b/unikernel/client/config.ml
index 7ef4fae..06b8ee9 100644
--- a/unikernel/client/config.ml
+++ b/unikernel/client/config.ml
@@ -37,7 +37,7 @@ let uri =
 let minipaf =
   foreign "Unikernel.Make"
     ~keys:[ Key.abstract uri ]
-    ~packages:[ package "paf" ~sublibs:[ "cohttp" ]
+    ~packages:[ package "paf-cohttp"
               ; package "ca-certs-nss" ]
     (console @-> time @-> pclock @-> stackv4v6 @-> dns @-> paf @-> job)
 
diff --git a/unikernel/client/unikernel.ml b/unikernel/client/unikernel.ml
index 2e41f36..5df578d 100644
--- a/unikernel/client/unikernel.ml
+++ b/unikernel/client/unikernel.ml
@@ -1,3 +1,5 @@
+[@@@warning "-45"]
+
 module type DNS = sig
   type t
 
@@ -26,7 +28,7 @@ module Make
   (Console : Mirage_console.S)
   (Time : Mirage_time.S)
   (Pclock : Mirage_clock.PCLOCK)
-  (Stack : Mirage_stack.V4V6)
+  (_ : Mirage_stack.V4V6)
   (Dns : DNS) (* XXX(dinosaure): ask @hannesm to provide a signature. *)
   (Paf : Paf_mirage.S) = struct
   module Client = Paf_cohttp
@@ -44,23 +46,24 @@ module Make
     let k scheme stack ipaddr port = match scheme with
       | `HTTP -> Lwt.return_some (stack, ipaddr, port) | _ -> Lwt.return_none in
     Mimic.(fold Paf.tcp_edn Fun.[ req Client.scheme
-                                   ; req stack
-                                   ; req Client.ipaddr
-                                   ; dft Client.port 80 ] ~k ctx)
+                                ; req stack
+                                ; req Client.ipaddr
+                                ; dft Client.port 80 ] ~k ctx)
 
   let with_tls ctx =
     let k scheme domain_name cfg stack ipaddr port = match scheme with
       | `HTTPS -> Lwt.return_some (domain_name, cfg, stack, ipaddr, port) | _ -> Lwt.return_none in
     Mimic.(fold Paf.tls_edn Fun.[ req Client.scheme
-                                   ; opt Client.domain_name
-                                   ; dft tls default_tls_cfg
-                                   ; req stack
-                                   ; req Client.ipaddr
-                                   ; dft Client.port 443 ] ~k ctx)
+                                ; opt Client.domain_name
+                                ; dft tls default_tls_cfg
+                                ; req stack
+                                ; req Client.ipaddr
+                                ; dft Client.port 443 ] ~k ctx)
 
   let dns = Mimic.make ~name:"dns"
 
   let with_dns v ctx = Mimic.add dns v ctx
+  let with_sleep ctx = Mimic.add Paf_cohttp.sleep Time.sleep_ns ctx
 
   let with_resolv ctx =
     let k dns domain_name =
@@ -75,6 +78,7 @@ module Make
     let uri = Uri.of_string (Key_gen.uri ()) in
     let ctx =
       Mimic.empty
+      |> with_sleep
       |> with_tcp         (* stack -> ipaddr -> port => (stack * ipaddr * port) *)
       |> with_tls         (* domain_name -> tls -> stack -> ipaddr -> port => (domain_name * tls * stack * ipaddr * port) *)
       |> with_resolv      (* domain_name => ipaddr *)
diff --git a/unikernel/server/config.ml b/unikernel/server/config.ml
index 00cb98d..84341a1 100644
--- a/unikernel/server/config.ml
+++ b/unikernel/server/config.ml
@@ -40,7 +40,8 @@ let minipaf =
     ~packages:[ package "ca-certs-nss"
               ; package "dns-client.mirage"
               ; package "paf"
-              ; package "paf" ~sublibs:[ "le"; "mirage" ]
+              ; package "paf" ~sublibs:[ "mirage" ]
+              ; package "paf-le"
               ; package "rock" ]
     (console @-> random @-> time @-> mclock @-> pclock @-> stackv4v6 @-> job)
 
diff --git a/unikernel/server/unikernel.ml b/unikernel/server/unikernel.ml
index a2844a4..fb2dcaf 100644
--- a/unikernel/server/unikernel.ml
+++ b/unikernel/server/unikernel.ml
@@ -11,7 +11,7 @@ let app =
   App.create ~handler ()
 
 module Make
-  (Console : Mirage_console.S)
+  (_ : Mirage_console.S)
   (Random : Mirage_random.S)
   (Time : Mirage_time.S)
   (Mclock : Mirage_clock.MCLOCK)
@@ -70,7 +70,7 @@ module Make
         HTTPS (Option.value ~default:443 port, { Letsencrypt.hostname; email; seed; certificate_seed; })
       | None -> failwith "Missing hostname"
 
-  let start console _random _time _mclock _pclock stackv4v6 =
+  let start _console _random _time _mclock _pclock stackv4v6 =
     let email = Option.bind (Key_gen.email ()) (Rresult.R.to_option <.> Emile.of_string) in
     let hostname = Option.bind (Key_gen.hostname ()) (Rresult.R.(to_option <.> host)) in
     let cfg = cfg ?port:(Key_gen.port ())