diff --git a/src/node/net/p2p.ml b/src/node/net/p2p.ml
index 09386c6ff..87d9352b3 100644
--- a/src/node/net/p2p.ml
+++ b/src/node/net/p2p.ml
@@ -9,6 +9,25 @@
 
 include P2p_types
 
+type 'meta meta_config = 'meta P2p_connection_pool.meta_config = {
+  encoding : 'meta Data_encoding.t;
+  initial : 'meta;
+}
+
+type 'msg app_message_encoding = 'msg P2p_connection_pool.encoding =
+    Encoding : {
+      tag: int ;
+      encoding: 'a Data_encoding.t ;
+      wrap: 'a -> 'msg ;
+      unwrap: 'msg -> 'a option ;
+      max_length: int option ;
+    } -> 'msg app_message_encoding
+
+type 'msg message_config = 'msg P2p_connection_pool.message_config = {
+  encoding : 'msg app_message_encoding list ;
+  versions : Version.t list;
+}
+
 type config = {
   listening_port : port option ;
   listening_addr : addr option ;
@@ -107,224 +126,204 @@ let may_create_welcome_worker config limits pool =
         ?addr:config.listening_addr port >>= fun w ->
       Lwt.return (Some w)
 
-module type MESSAGE = sig
-  type t
-  val encoding : t P2p_connection_pool.encoding list
-  val supported_versions : Version.t list
-end
+type ('msg, 'meta) connection = ('msg, 'meta) P2p_connection_pool.connection
 
-module type METADATA = sig
-  type t
-  val initial : t
-  val encoding : t Data_encoding.t
-  val score : t -> float
-end
+module Real = struct
 
-module Make (Message : MESSAGE) (Metadata : METADATA) = struct
-
-  let meta_cfg = {
-    P2p_connection_pool.encoding = Metadata.encoding ;
-    initial = Metadata.initial ;
-  }
-  and msg_cfg = {
-    P2p_connection_pool.encoding = Message.encoding ;
-    versions = Message.supported_versions ;
+  type ('msg, 'meta) net = {
+    config: config ;
+    limits: limits ;
+    io_sched: P2p_io_scheduler.t ;
+    pool: ('msg, 'meta) P2p_connection_pool.t ;
+    discoverer: P2p_discovery.t option ;
+    maintenance: 'meta P2p_maintenance.t ;
+    welcome: P2p_welcome.t option ;
   }
 
-  type connection = (Message.t, Metadata.t) P2p_connection_pool.connection
-
-  module Real = struct
-
-    type net = {
-      config: config ;
-      limits: limits ;
-      io_sched: P2p_io_scheduler.t ;
-      pool: (Message.t, Metadata.t) P2p_connection_pool.t ;
-      discoverer: P2p_discovery.t option ;
-      maintenance: Metadata.t P2p_maintenance.t ;
-      welcome: P2p_welcome.t option ;
-    }
-
-    let create ~config ~limits =
-      let io_sched = create_scheduler limits in
-      create_connection_pool
-        config limits meta_cfg msg_cfg io_sched >>= fun pool ->
-      let discoverer = may_create_discovery_worker config pool in
-      let maintenance = create_maintenance_worker limits pool discoverer in
-      may_create_welcome_worker config limits pool >>= fun welcome ->
-      Lwt.return {
-        config ;
-        limits ;
-        io_sched ;
-        pool ;
-        discoverer ;
-        maintenance ;
-        welcome ;
-      }
-
-    let gid { config } = config.identity.gid
-
-    let maintain { maintenance } () =
-      P2p_maintenance.maintain maintenance
-
-    let roll _net () = Lwt.return_unit (* TODO implement *)
-
-    (* returns when all workers have shutted down in the opposite
-       creation order. *)
-    let shutdown net () =
-      Lwt_utils.may ~f:P2p_welcome.shutdown net.welcome >>= fun () ->
-      P2p_maintenance.shutdown net.maintenance >>= fun () ->
-      Lwt_utils.may ~f:P2p_discovery.shutdown net.discoverer >>= fun () ->
-      P2p_connection_pool.destroy net.pool >>= fun () ->
-      P2p_io_scheduler.shutdown net.io_sched
-
-    let connections { pool } () =
-      P2p_connection_pool.fold_connections pool
-        ~init:[] ~f:(fun _gid c acc -> c :: acc)
-    let find_connection { pool } gid =
-      P2p_connection_pool.Gids.find_connection pool gid
-    let connection_info _net conn =
-      P2p_connection_pool.connection_info conn
-    let connection_stat _net conn =
-      P2p_connection_pool.connection_stat conn
-    let global_stat { pool } () =
-      P2p_connection_pool.pool_stat pool
-    let set_metadata { pool } conn meta =
-      P2p_connection_pool.Gids.set_metadata pool conn meta
-    let get_metadata { pool } conn =
-      P2p_connection_pool.Gids.get_metadata pool conn
-
-    let rec recv net () =
-      let pipes =
-        P2p_connection_pool.fold_connections
-          net.pool ~init:[] ~f:begin fun _gid conn acc ->
-          (P2p_connection_pool.is_readable conn >>= function
-            | Ok () -> Lwt.return conn
-            | Error _ -> Lwt_utils.never_ending) :: acc
-        end in
-      Lwt.pick pipes >>= fun conn ->
-      P2p_connection_pool.read conn >>= function
-      | Ok msg ->
-          Lwt.return (conn, msg)
-      | Error _ ->
-          Lwt_unix.yield () >>= fun () ->
-          recv net ()
-
-    let send _net c m =
-      P2p_connection_pool.write c m >>= function
-      | Ok () -> Lwt.return_unit
-      | Error _ -> Lwt.fail End_of_file (* temporary *)
-
-    let try_send _net c v =
-      match P2p_connection_pool.write_now c v with
-      | Ok v -> v
-      | Error _ -> false
-
-    let broadcast { pool } msg = P2p_connection_pool.write_all pool msg
-
-  end
-
-  module Fake = struct
-
-    let id = Identity.generate Crypto_box.default_target
-    let empty_stat = {
-      Stat.total_sent = 0 ;
-      total_recv = 0 ;
-      current_inflow = 0 ;
-      current_outflow = 0 ;
-    }
-    let connection_info = {
-      Connection_info.incoming = false ;
-      gid = id.gid ;
-      id_point = (Ipaddr.V6.unspecified, None) ;
-      remote_socket_port = 0 ;
-      versions = [] ;
-    }
-
-  end
-
-  type net = {
-    gid : Gid.t ;
-    maintain : unit -> unit Lwt.t ;
-    roll : unit -> unit Lwt.t ;
-    shutdown : unit -> unit Lwt.t ;
-    connections : unit -> connection list ;
-    find_connection : Gid.t -> connection option ;
-    connection_info : connection -> Connection_info.t ;
-    connection_stat : connection -> Stat.t ;
-    global_stat : unit -> Stat.t ;
-    get_metadata : Gid.t -> Metadata.t option ;
-    set_metadata : Gid.t -> Metadata.t -> unit ;
-    recv : unit -> (connection * Message.t) Lwt.t ;
-    send : connection -> Message.t -> unit Lwt.t ;
-    try_send : connection -> Message.t -> bool ;
-    broadcast : Message.t -> unit ;
-  }
-
-  let bootstrap ~config ~limits =
-    Real.create ~config ~limits >>= fun net ->
-    Real.maintain net () >>= fun () ->
+  let create ~config ~limits meta_cfg msg_cfg =
+    let io_sched = create_scheduler limits in
+    create_connection_pool
+      config limits meta_cfg msg_cfg io_sched >>= fun pool ->
+    let discoverer = may_create_discovery_worker config pool in
+    let maintenance = create_maintenance_worker limits pool discoverer in
+    may_create_welcome_worker config limits pool >>= fun welcome ->
     Lwt.return {
-      gid = Real.gid net ;
-      maintain = Real.maintain net ;
-      roll = Real.roll net  ;
-      shutdown = Real.shutdown net  ;
-      connections = Real.connections net  ;
-      find_connection = Real.find_connection net ;
-      connection_info = Real.connection_info net  ;
-      connection_stat = Real.connection_stat net ;
-      global_stat = Real.global_stat net ;
-      get_metadata = Real.get_metadata net ;
-      set_metadata = Real.set_metadata net ;
-      recv = Real.recv net ;
-      send = Real.send net ;
-      try_send = Real.try_send net ;
-      broadcast = Real.broadcast net ;
+      config ;
+      limits ;
+      io_sched ;
+      pool ;
+      discoverer ;
+      maintenance ;
+      welcome ;
     }
 
-  let faked_network = {
-      gid = Fake.id.gid ;
-      maintain = Lwt.return ;
-      roll = Lwt.return ;
-      shutdown = Lwt.return ;
-      connections = (fun () -> []) ;
-      find_connection = (fun _ -> None) ;
-      connection_info = (fun _ -> Fake.connection_info) ;
-      connection_stat = (fun _ -> Fake.empty_stat) ;
-      global_stat = (fun () -> Fake.empty_stat) ;
-      get_metadata = (fun _ -> None) ;
-      set_metadata = (fun _ _ -> ()) ;
-      recv = (fun () -> Lwt_utils.never_ending) ;
-      send = (fun _ _ -> Lwt_utils.never_ending) ;
-      try_send = (fun _ _ -> false) ;
-      broadcast = ignore ;
-    }
+  let gid { config } = config.identity.gid
 
-  let gid net = net.gid
-  let maintain net = net.maintain ()
-  let roll net = net.roll ()
-  let shutdown net = net.shutdown ()
-  let connections net = net.connections ()
-  let find_connection net = net.find_connection
-  let connection_info net = net.connection_info
-  let connection_stat net = net.connection_stat
-  let global_stat net = net.global_stat ()
-  let get_metadata net = net.get_metadata
-  let set_metadata net = net.set_metadata
-  let recv net = net.recv ()
-  let send net = net.send
-  let try_send net = net.try_send
-  let broadcast net = net.broadcast
+  let maintain { maintenance } () =
+    P2p_maintenance.maintain maintenance
 
-  module Raw = struct
-    type 'a t = 'a P2p_connection_pool.Message.t =
-      | Bootstrap
-      | Advertise of P2p_types.Point.t list
-      | Message of 'a
-      | Disconnect
-    type message = Message.t t
-    let encoding = P2p_connection_pool.Message.encoding Message.encoding
-    let supported_versions = Message.supported_versions
-  end
+  let roll _net () = Lwt.return_unit (* TODO implement *)
+
+  (* returns when all workers have shutted down in the opposite
+     creation order. *)
+  let shutdown net () =
+    Lwt_utils.may ~f:P2p_welcome.shutdown net.welcome >>= fun () ->
+    P2p_maintenance.shutdown net.maintenance >>= fun () ->
+    Lwt_utils.may ~f:P2p_discovery.shutdown net.discoverer >>= fun () ->
+    P2p_connection_pool.destroy net.pool >>= fun () ->
+    P2p_io_scheduler.shutdown net.io_sched
+
+  let connections { pool } () =
+    P2p_connection_pool.fold_connections pool
+      ~init:[] ~f:(fun _gid c acc -> c :: acc)
+  let find_connection { pool } gid =
+    P2p_connection_pool.Gids.find_connection pool gid
+  let connection_info _net conn =
+    P2p_connection_pool.connection_info conn
+  let connection_stat _net conn =
+    P2p_connection_pool.connection_stat conn
+  let global_stat { pool } () =
+    P2p_connection_pool.pool_stat pool
+  let set_metadata { pool } conn meta =
+    P2p_connection_pool.Gids.set_metadata pool conn meta
+  let get_metadata { pool } conn =
+    P2p_connection_pool.Gids.get_metadata pool conn
+
+  let rec recv _net conn =
+    P2p_connection_pool.read conn
+
+  let rec recv_any net () =
+    let pipes =
+      P2p_connection_pool.fold_connections
+        net.pool ~init:[] ~f:begin fun _gid conn acc ->
+        (P2p_connection_pool.is_readable conn >>= function
+          | Ok () -> Lwt.return conn
+          | Error _ -> Lwt_utils.never_ending) :: acc
+      end in
+    Lwt.pick pipes >>= fun conn ->
+    P2p_connection_pool.read conn >>= function
+    | Ok msg ->
+        Lwt.return (conn, msg)
+    | Error _ ->
+        Lwt_unix.yield () >>= fun () ->
+        recv_any net ()
+
+  let send _net c m =
+    P2p_connection_pool.write c m >>= function
+    | Ok () -> Lwt.return_unit
+    | Error _ -> Lwt.fail End_of_file (* temporary *)
+
+  let try_send _net c v =
+    match P2p_connection_pool.write_now c v with
+    | Ok v -> v
+    | Error _ -> false
+
+  let broadcast { pool } msg = P2p_connection_pool.write_all pool msg
 
 end
+
+module Fake = struct
+
+  let id = Identity.generate Crypto_box.default_target
+  let empty_stat = {
+    Stat.total_sent = 0 ;
+    total_recv = 0 ;
+    current_inflow = 0 ;
+    current_outflow = 0 ;
+  }
+  let connection_info = {
+    Connection_info.incoming = false ;
+    gid = id.gid ;
+    id_point = (Ipaddr.V6.unspecified, None) ;
+    remote_socket_port = 0 ;
+    versions = [] ;
+  }
+
+end
+
+type ('msg, 'meta) t = {
+  gid : Gid.t ;
+  maintain : unit -> unit Lwt.t ;
+  roll : unit -> unit Lwt.t ;
+  shutdown : unit -> unit Lwt.t ;
+  connections : unit -> ('msg, 'meta) connection list ;
+  find_connection : Gid.t -> ('msg, 'meta) connection option ;
+  connection_info : ('msg, 'meta) connection -> Connection_info.t ;
+  connection_stat : ('msg, 'meta) connection -> Stat.t ;
+  global_stat : unit -> Stat.t ;
+  get_metadata : Gid.t -> 'meta option ;
+  set_metadata : Gid.t -> 'meta -> unit ;
+  recv : ('msg, 'meta) connection -> 'msg tzresult Lwt.t ;
+  recv_any : unit -> (('msg, 'meta) connection * 'msg) Lwt.t ;
+  send : ('msg, 'meta) connection -> 'msg -> unit Lwt.t ;
+  try_send : ('msg, 'meta) connection -> 'msg -> bool ;
+  broadcast : 'msg -> unit ;
+}
+type ('msg, 'meta) net = ('msg, 'meta) t
+
+let bootstrap ~config ~limits meta_cfg msg_cfg =
+  Real.create ~config ~limits meta_cfg msg_cfg  >>= fun net ->
+  Real.maintain net () >>= fun () ->
+  Lwt.return {
+    gid = Real.gid net ;
+    maintain = Real.maintain net ;
+    roll = Real.roll net  ;
+    shutdown = Real.shutdown net  ;
+    connections = Real.connections net  ;
+    find_connection = Real.find_connection net ;
+    connection_info = Real.connection_info net  ;
+    connection_stat = Real.connection_stat net ;
+    global_stat = Real.global_stat net ;
+    get_metadata = Real.get_metadata net ;
+    set_metadata = Real.set_metadata net ;
+    recv = Real.recv net ;
+    recv_any = Real.recv_any net ;
+    send = Real.send net ;
+    try_send = Real.try_send net ;
+    broadcast = Real.broadcast net ;
+  }
+
+let faked_network = {
+  gid = Fake.id.gid ;
+  maintain = Lwt.return ;
+  roll = Lwt.return ;
+  shutdown = Lwt.return ;
+  connections = (fun () -> []) ;
+  find_connection = (fun _ -> None) ;
+  connection_info = (fun _ -> Fake.connection_info) ;
+  connection_stat = (fun _ -> Fake.empty_stat) ;
+  global_stat = (fun () -> Fake.empty_stat) ;
+  get_metadata = (fun _ -> None) ;
+  set_metadata = (fun _ _ -> ()) ;
+  recv = (fun _ -> Lwt_utils.never_ending) ;
+  recv_any = (fun () -> Lwt_utils.never_ending) ;
+  send = (fun _ _ -> Lwt_utils.never_ending) ;
+  try_send = (fun _ _ -> false) ;
+  broadcast = ignore ;
+}
+
+let gid net = net.gid
+let maintain net = net.maintain ()
+let roll net = net.roll ()
+let shutdown net = net.shutdown ()
+let connections net = net.connections ()
+let find_connection net = net.find_connection
+let connection_info net = net.connection_info
+let connection_stat net = net.connection_stat
+let global_stat net = net.global_stat ()
+let get_metadata net = net.get_metadata
+let set_metadata net = net.set_metadata
+let recv net = net.recv
+let recv_any net = net.recv_any ()
+let send net = net.send
+let try_send net = net.try_send
+let broadcast net = net.broadcast
+
+module Raw = struct
+  type 'a t = 'a P2p_connection_pool.Message.t =
+    | Bootstrap
+    | Advertise of P2p_types.Point.t list
+    | Message of 'a
+    | Disconnect
+  let encoding = P2p_connection_pool.Message.encoding
+end
diff --git a/src/node/net/p2p.mli b/src/node/net/p2p.mli
index bd5d7c5ae..06b3dc93e 100644
--- a/src/node/net/p2p.mli
+++ b/src/node/net/p2p.mli
@@ -29,6 +29,24 @@ module Connection_info = P2p_types.Connection_info
 
 module Stat = P2p_types.Stat
 
+type 'meta meta_config = {
+  encoding : 'meta Data_encoding.t;
+  initial : 'meta;
+}
+
+type 'msg app_message_encoding = Encoding : {
+    tag: int ;
+    encoding: 'a Data_encoding.t ;
+    wrap: 'a -> 'msg ;
+    unwrap: 'msg -> 'a option ;
+    max_length: int option ;
+  } -> 'msg app_message_encoding
+
+type 'msg message_config = {
+  encoding : 'msg app_message_encoding list ;
+  versions : Version.t list;
+}
+
 (** Network configuration *)
 type config = {
 
@@ -98,91 +116,78 @@ type limits = {
 
 }
 
+type ('msg, 'meta) t
+type ('msg, 'meta) net = ('msg, 'meta) t
 
-(** Type of message used by higher layers *)
-module type MESSAGE = sig
-  type t
-  val encoding : t P2p_connection_pool.encoding list
-  (** High level protocol(s) talked by the peer. When two peers
-      initiate a connection, they exchange their list of supported
-      versions. The chosen one, if any, is the maximum common one (in
-      lexicographic order) *)
-  val supported_versions : Version.t list
+(** A faked p2p layer, which do not initiate any connection
+    nor open any listening socket *)
+val faked_network : ('msg, 'meta) net
+
+(** Main network initialisation function *)
+val bootstrap :
+  config:config -> limits:limits ->
+  'meta meta_config -> 'msg message_config ->  ('msg, 'meta) net Lwt.t
+
+(** Return one's gid *)
+val gid : ('msg, 'meta) net -> Gid.t
+
+(** A maintenance operation : try and reach the ideal number of peers *)
+val maintain : ('msg, 'meta) net -> unit Lwt.t
+
+(** Voluntarily drop some peers and replace them by new buddies *)
+val roll : ('msg, 'meta) net -> unit Lwt.t
+
+(** Close all connections properly *)
+val shutdown : ('msg, 'meta) net -> unit Lwt.t
+
+(** A connection to a peer *)
+type ('msg, 'meta) connection
+
+(** Access the domain of active peers *)
+val connections : ('msg, 'meta) net -> ('msg, 'meta) connection list
+
+(** Return the active peer with identity [gid] *)
+val find_connection : ('msg, 'meta) net -> Gid.t -> ('msg, 'meta) connection option
+
+(** Access the info of an active peer, if available *)
+val connection_info :
+  ('msg, 'meta) net -> ('msg, 'meta) connection -> Connection_info.t
+val connection_stat :
+  ('msg, 'meta) net -> ('msg, 'meta) connection -> Stat.t
+val global_stat : ('msg, 'meta) net -> Stat.t
+
+(** Accessors for meta information about a global identifier *)
+val get_metadata : ('msg, 'meta) net -> Gid.t -> 'meta option
+val set_metadata : ('msg, 'meta) net -> Gid.t -> 'meta -> unit
+
+(** Wait for a message from a given connection. *)
+val recv :
+  ('msg, 'meta) net -> ('msg, 'meta) connection -> 'msg tzresult Lwt.t
+
+(** Wait for a message from any active connections. *)
+val recv_any :
+  ('msg, 'meta) net -> (('msg, 'meta) connection * 'msg) Lwt.t
+
+(** [send net peer msg] is a thread that returns when [msg] has been
+    successfully enqueued in the send queue. *)
+val send :
+  ('msg, 'meta) net -> ('msg, 'meta) connection -> 'msg -> unit Lwt.t
+
+(** [try_send net peer msg] is [true] if [msg] has been added to the
+    send queue for [peer], [false] otherwise *)
+val try_send :
+  ('msg, 'meta) net -> ('msg, 'meta) connection -> 'msg -> bool
+
+(** Send a message to all peers *)
+val broadcast : ('msg, 'meta) net -> 'msg -> unit
+
+(**/**)
+module Raw : sig
+  type 'a t =
+    | Bootstrap
+    | Advertise of P2p_types.Point.t list
+    | Message of 'a
+    | Disconnect
+  val encoding: 'msg app_message_encoding list -> 'msg t Data_encoding.t
 end
 
-(** Type of metadata associated to an identity *)
-module type METADATA = sig
-  type t
-  val initial : t
-  val encoding : t Data_encoding.t
-  val score : t -> float
-end
-
-module Make (Message : MESSAGE) (Metadata : METADATA) : sig
-
-  type net
-
-  (** A faked p2p layer, which do not initiate any connection
-      nor open any listening socket *)
-  val faked_network : net
-
-  (** Main network initialisation function *)
-  val bootstrap : config:config -> limits:limits -> net Lwt.t
-
-  (** Return one's gid *)
-  val gid : net -> Gid.t
-
-  (** A maintenance operation : try and reach the ideal number of peers *)
-  val maintain : net -> unit Lwt.t
-
-  (** Voluntarily drop some peers and replace them by new buddies *)
-  val roll : net -> unit Lwt.t
-
-  (** Close all connections properly *)
-  val shutdown : net -> unit Lwt.t
-
-  (** A connection to a peer *)
-  type connection
-
-  (** Access the domain of active peers *)
-  val connections : net -> connection list
-
-  (** Return the active peer with identity [gid] *)
-  val find_connection : net -> Gid.t -> connection option
-
-  (** Access the info of an active peer, if available *)
-  val connection_info : net -> connection -> Connection_info.t
-  val connection_stat : net -> connection -> Stat.t
-  val global_stat : net -> Stat.t
-
-  (** Accessors for meta information about a global identifier *)
-  val get_metadata : net -> Gid.t -> Metadata.t option
-  val set_metadata : net -> Gid.t -> Metadata.t -> unit
-
-  (** Wait for a message from any peer in the network *)
-  val recv : net -> (connection * Message.t) Lwt.t
-
-  (** [send net peer msg] is a thread that returns when [msg] has been
-      successfully enqueued in the send queue. *)
-  val send : net -> connection -> Message.t -> unit Lwt.t
-
-  (** [try_send net peer msg] is [true] if [msg] has been added to the
-      send queue for [peer], [false] otherwise *)
-  val try_send : net -> connection -> Message.t -> bool
-
-  (** Send a message to all peers *)
-  val broadcast : net -> Message.t -> unit
-
-  (**/**)
-  module Raw : sig
-    type 'a t =
-      | Bootstrap
-      | Advertise of P2p_types.Point.t list
-      | Message of 'a
-      | Disconnect
-    type message = Message.t t
-    val encoding: message Data_encoding.t
-    val supported_versions: P2p_types.Version.t list
-  end
-
-end
diff --git a/src/node/shell/tezos_p2p.ml b/src/node/shell/tezos_p2p.ml
index ce23e38df..0b4ef48d2 100644
--- a/src/node/shell/tezos_p2p.ml
+++ b/src/node/shell/tezos_p2p.ml
@@ -1,4 +1,6 @@
 
+open P2p
+
 type net_id = Store.net_id
 
 type msg =
@@ -24,7 +26,7 @@ module Message = struct
   let encoding =
     let open Data_encoding in
     let case ?max_length ~tag encoding unwrap wrap =
-      P2p_connection_pool.Encoding { tag; encoding; wrap; unwrap; max_length } in
+      P2p.Encoding { tag; encoding; wrap; unwrap; max_length } in
     [
       case ~tag:0x10 (tup2 Block_hash.encoding (list Block_hash.encoding))
         (function
@@ -91,6 +93,44 @@ module Metadata = struct
   let score () = 0.
 end
 
-include Message
-include (Metadata : module type of Metadata with type t := metadata)
-include P2p.Make(Message)(Metadata)
+
+let meta_cfg : _ P2p.meta_config = {
+  P2p.encoding = Metadata.encoding ;
+  initial = Metadata.initial ;
+}
+
+and msg_cfg : _ P2p.message_config = {
+  encoding = Message.encoding ;
+  versions = Message.supported_versions ;
+}
+
+type net = (Message.t, Metadata.t) P2p.net
+
+let bootstrap ~config ~limits =
+  P2p.bootstrap ~config ~limits meta_cfg msg_cfg
+
+let broadcast = P2p.broadcast
+let try_send = P2p.try_send
+let recv = P2p.recv_any
+let send = P2p.send
+let set_metadata = P2p.set_metadata
+let get_metadata = P2p.get_metadata
+let connection_info = P2p.connection_info
+let find_connection = P2p.find_connection
+let connections = P2p.connections
+type connection = (Message.t, Metadata.t) P2p.connection
+let shutdown = P2p.shutdown
+let roll = P2p.roll
+let maintain = P2p.maintain
+let faked_network = P2p.faked_network
+
+module Raw = struct
+  type 'a t = 'a P2p.Raw.t =
+    | Bootstrap
+    | Advertise of Point.t list
+    | Message of 'a
+    | Disconnect
+  type message = Message.t t
+  let encoding = P2p.Raw.encoding msg_cfg.encoding
+  let supported_versions = msg_cfg.versions
+end
diff --git a/src/node/shell/tezos_p2p.mli b/src/node/shell/tezos_p2p.mli
index 1dc142de9..db1344baa 100644
--- a/src/node/shell/tezos_p2p.mli
+++ b/src/node/shell/tezos_p2p.mli
@@ -75,10 +75,10 @@ val broadcast : net -> msg -> unit
 module Raw : sig
   type 'a t =
     | Bootstrap
-    | Advertise of P2p_types.Point.t list
+    | Advertise of Point.t list
     | Message of 'a
     | Disconnect
   type message = msg t
   val encoding: message Data_encoding.t
-  val supported_versions: P2p_types.Version.t list
+  val supported_versions: Version.t list
 end