diff --git a/src/global.h b/src/global.h
index 509f4b6e..4bdec617 100755
--- a/src/global.h
+++ b/src/global.h
@@ -110,6 +110,12 @@ LED bar:      lbr
 // download URL
 #define LLCON_DOWNLOAD_URL              "http://sourceforge.net/projects/llcon/files"
 
+// determining server internal address uses well-known host and port
+// (Google DNS, or something else reliable)
+#define WELL_KNOWN_HOST                 "8.8.8.8"  // Google
+#define WELL_KNOWN_PORT                  53        // DNS
+#define IP_LOOKUP_TIMEOUT                500       // ms
+
 // defined port number for client and server
 #if ( SYSTEM_FRAME_SIZE_SAMPLES == 64 )
 # define LLCON_DEFAULT_PORT_NUMBER      22064 // different port number for 64 samples frame size version
diff --git a/src/util.cpp b/src/util.cpp
index 6db88204..ef2e861d 100755
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -893,8 +893,8 @@ bool NetworkUtil::ParseNetworkAddress ( QString       strAddress,
 CHostAddress NetworkUtil::GetLocalAddress()
 {
     QTcpSocket socket;
-    socket.connectToHost("8.8.8.8", 53); // google DNS, or something else reliable
-    if (socket.waitForConnected()) {
+    socket.connectToHost( WELL_KNOWN_HOST, WELL_KNOWN_PORT );
+    if (socket.waitForConnected( IP_LOOKUP_TIMEOUT )) {
         return CHostAddress( socket.localAddress(), 0 );
     } else {
         qWarning()