DMP not allowed directly in root

acn/appliance.cpp

@@ -41,10 +41,14 @@ Appliance::Appliance(UUID::uuid cid)
 {
   fctn_ = "libESTA ACN Appliance";
 
+  /**
+   * 1.3.1. Recursive use of PDU Format in Other Protocols
+   * ... within ACN as currently specified, there is just one higher layer
+   * protocol defined which interfaces directly to the root layer:
+   *    Session Data Transport
+   */
   RlpRegisterVector(SDT::SDT_PROTOCOL_ID, std::bind(&Appliance::SdtReceiver,
                                                   this, std::placeholders::_1));
-  RlpRegisterVector(DMP::DMP_PROTOCOL_ID, std::bind(&Appliance::DmpReceiver,
-                                                  this, std::placeholders::_1));
 };