--- a/src/common/packet.h	Thu May 31 14:30:07 2007 +0200
+++ b/src/common/packet.h	Thu May 31 14:30:34 2007 +0200
@@ -32,6 +32,8 @@
 
 namespace ns3 {
 
+class PacketPrinter;
+
 /**
  * \brief network packets
  *
@@ -254,6 +256,7 @@
   uint32_t GetUid (void) const;
 
   void Print (std::ostream &os) const;
+  void Print (std::ostream &os, const PacketPrinter &printer) const;
 private:
   Packet (Buffer buffer, Tags tags, PacketHistory history, uint32_t uid);
   Buffer m_buffer;