devices must be aware of their DHCP status

protocol/artistic/artnet/device.cpp

@@ -511,6 +511,19 @@ ipAddress Device::broadcastIp() const
 }
 
 
+/**
+ * @brief Device::deviceHasDHCP
+ * @return
+ *
+ * The default implimentation is to return false, as the default invalid IP is static.
+ * \note Platform aware device types must return their DHCP status.
+ */
+bool Device::deviceHasDHCP() const
+{
+    return false;
+}
+
+
 /**
  * @brief Device::shortName
  * @return

protocol/artistic/artnet/device.h

@@ -87,9 +87,12 @@ protected:
   virtual void txArtPollReply(std::shared_ptr<pollreply_data> = nullptr);
   virtual void txArtDiagData();
 
+  // OSI layer 2
   virtual std::array<uint8_t, 6> deviceMac() const;
+  // OSI layer 3
   virtual ipAddress deviceIp() const;
   virtual ipAddress broadcastIp() const;
+  virtual bool deviceHasDHCP() const;
 
 private:
   std::weak_ptr<const std::function<void(std::shared_ptr<bufferstream>, ipAddress)>> _sender;