universes have a destination IP, defaulting to the appropriate multicast address

protocols/sacn/universe.cpp

@@ -34,6 +34,7 @@ Universe::Universe()
     , active_data_slots(0)
     , provenance_(std::shared_ptr<DATA::data_header>(new DATA::data_header()))
 {
+  destination.type = ACN::SDT::SDT_ADDR_NULL;
 }
 
 

protocols/sacn/universe.h

@@ -54,6 +54,13 @@ public:
   virtual bool isSyncronized() const;
   virtual void synchronize(uint8_t = 0);
 
+  /**
+   * @brief destination IP address
+   *
+   * Setting type to ACN::SDT::SDT_ADDR_NULL will send on the multicast group.
+   */
+  ipAddress destination;
+
 protected:
   /**
    * @brief \cite sACN 3.7 Active Data Slots