debug log line

controller/EmbeddedNetworkController.cpp

@@ -1408,6 +1408,8 @@ void EmbeddedNetworkController::_request(
 #endif
 	char osArch[256];
 	metaData.get(ZT_NETWORKCONFIG_REQUEST_METADATA_KEY_OS_ARCH, osArch, sizeof(osArch));
+	fprintf(stderr, "Network Config Request: nwid=%.16llx, osArch=%s\n",
+		nwid, osArch);
 	_db.nodeIsOnline(nwid,identity.address().toInt(),fromAddr, osArch);
 #ifdef CENTRAL_CONTROLLER_REQUEST_BENCHMARK
 	b2.stop();