--- a/src/devices/wifi/mac-low.cc	Mon Jun 02 10:51:55 2008 -0700
+++ b/src/devices/wifi/mac-low.cc	Tue Jun 03 16:20:17 2008 -0700
@@ -47,6 +47,7 @@
   virtual uint32_t GetSerializedSize (void) const;
   virtual void Serialize (TagBuffer i) const;
   virtual void Deserialize (TagBuffer i);
+  virtual void Print (std::ostream &os) const;
 
   void Set (double snr);
   double Get (void) const;
@@ -89,6 +90,11 @@
   m_snr = i.ReadDouble ();
 }
 void 
+SnrTag::Print (std::ostream &os) const
+{
+  os << "Snr=" << m_snr;
+}
+void 
 SnrTag::Set (double snr)
 {
   m_snr = snr;