diff -r a12900ea255e -r 49a08376f196 src/devices/wifi/nqap-wifi-mac.cc
--- a/src/devices/wifi/nqap-wifi-mac.cc	Wed Dec 10 01:34:04 2008 -0800
+++ b/src/devices/wifi/nqap-wifi-mac.cc	Wed Dec 10 01:47:59 2008 -0800
@@ -37,6 +37,9 @@
 
 NS_OBJECT_ENSURE_REGISTERED (NqapWifiMac);
 
+#undef NS_LOG_APPEND_CONTEXT
+#define NS_LOG_APPEND_CONTEXT if (m_low != 0) {std::clog << "[mac=" << m_low->GetAddress () << "] ";}
+
 TypeId 
 NqapWifiMac::GetTypeId (void)
 {