Index: denali.pro.user
===================================================================
diff -u -r39a9d9b3930ab483df75da6c2e7bf8838fa8ff5e -r526875e8db8cf0c97f5cd8aa90564e41d42f5fde
--- denali.pro.user	(.../denali.pro.user)	(revision 39a9d9b3930ab483df75da6c2e7bf8838fa8ff5e)
+++ denali.pro.user	(.../denali.pro.user)	(revision 526875e8db8cf0c97f5cd8aa90564e41d42f5fde)
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 4.10.0, 2022-02-16T18:24:17. -->
+<!-- Written by QtCreator 4.10.0, 2022-02-17T18:56:14. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>
Index: main.cpp
===================================================================
diff -u -r27cc308ff5113a9386899d3c8f8b29962a8498e1 -r526875e8db8cf0c97f5cd8aa90564e41d42f5fde
--- main.cpp	(.../main.cpp)	(revision 27cc308ff5113a9386899d3c8f8b29962a8498e1)
+++ main.cpp	(.../main.cpp)	(revision 526875e8db8cf0c97f5cd8aa90564e41d42f5fde)
@@ -85,6 +85,7 @@
 bool        gSendEmptyKeepAwake         = false ;
 bool        gFakeSeqAtBegin             = false ;
 bool        gDisableUnhandledReport     = false ;
+bool        gEnableDialinUnhandled      = false ;
 bool        gDisableTimeout             = false ;
 bool        gDisableAlarmNoMinimize     = false ;
 
@@ -178,13 +179,21 @@
     parser.addOption(optionFakeSeqAtBegin);
 
     // --- -u : disable-unhandled-report
-    QCommandLineOption optionDisableUnhandledReport(QStringList() << "u" << "disable-unhandled-report",
-                                                    QCoreApplication::translate("main", "Disable unhandled messages report as an error in the log"));
+    QCommandLineOption optionDisableUnhandledReport(
+                QStringList() << "u" << "disable-unhandled-report",
+                QCoreApplication::translate("main", "Disable unhandled messages report as an error in the log"));
     parser.addOption(optionDisableUnhandledReport);
 
+    // --- -d : enable-dialin-unhandled
+    QCommandLineOption optionEnableDialinUnhandled(
+                QStringList() << "d" << "enable-dialin-unhandled",
+                QCoreApplication::translate("main", "Enable the Dialin messages logged as unhandled"));
+    parser.addOption(optionEnableDialinUnhandled);
+
     // --- -q : disable-timeout
-    QCommandLineOption optionDisableTimeout(QStringList() << "q" << "disable-timeout",
-                                            QCoreApplication::translate("main", "Disables HD communication timeout"));
+    QCommandLineOption optionDisableTimeout(
+                QStringList() << "q" << "disable-timeout",
+                QCoreApplication::translate("main", "Disables HD communication timeout"));
     parser.addOption(optionDisableTimeout);
 
     // --- -a : disable-alarm-no-minimize
@@ -199,6 +208,7 @@
     gConsoleoutFrameInterface   = parser.isSet(optionConsoleoutFrameInterface   );
     gConsoleoutLogs             = parser.isSet(optionConsoleoutLogs             );
     gDisableUnhandledReport     = parser.isSet(optionDisableUnhandledReport     );
+    gEnableDialinUnhandled      = parser.isSet(optionEnableDialinUnhandled      );
     gDisableTimeout             = parser.isSet(optionDisableTimeout             );
     gDisableAlarmNoMinimize     = parser.isSet(optionDisableAlarmMoMinimize     );
 
Index: sources/canbus/FrameInterface.cpp
===================================================================
diff -u -r27cc308ff5113a9386899d3c8f8b29962a8498e1 -r526875e8db8cf0c97f5cd8aa90564e41d42f5fde
--- sources/canbus/FrameInterface.cpp	(.../FrameInterface.cpp)	(revision 27cc308ff5113a9386899d3c8f8b29962a8498e1)
+++ sources/canbus/FrameInterface.cpp	(.../FrameInterface.cpp)	(revision 526875e8db8cf0c97f5cd8aa90564e41d42f5fde)
@@ -178,9 +178,13 @@
     case eDG_Dialin:
     case eDialin_UI:
     case eUI_Dialin:
-        channelGroup = ChannelGroup::eChannel_Ignores;
+        if ( gEnableDialinUnhandled ) {
+            channelGroup = ChannelGroup::eChannel_Listens;
+        } else {
+            channelGroup = ChannelGroup::eChannel_Ignores;
+        }
         debugChannel = true;
-        ok = false; // it's still false since UI is not handling any messages coming from Debug Channels.
+        ok = gEnableDialinUnhandled;
         break;
 
     case eChlid_HD_DG    :
@@ -241,11 +245,17 @@
     quint32 mFrameId = vFrame.frameId();
 
     ChannelGroup channelGroup = checkChannel(mFrameId, &ok, &debugChannel);
-    if (!ok) {
-        QString message           = "Unexpected Channel\r\n";
-        if (debugChannel) message = "Debug Channel\r\n";
-        LOG_DEBUG(message +
-                  Format::toHexString(mFrameId, false, eLenChannelDigits) + " -- " + vFrame.payload().toHex(' '));
+
+    QString logMessage;
+    if ( debugChannel ) {
+        logMessage = "Debug Channel\r\n" +
+                Format::toHexString(mFrameId, false, eLenChannelDigits) + " -- " + vFrame.payload().toHex(' ');
+        LOG_DEBUG(logMessage);
+    }
+    if ( ! ok         ) {
+        logMessage = "Unexpected Channel\r\n" +
+                Format::toHexString(mFrameId, false, eLenChannelDigits) + " -- " + vFrame.payload().toHex(' ');
+        LOG_DEBUG(logMessage);
         return;
     }
 
Index: sources/canbus/MessageInterpreter.cpp
===================================================================
diff -u -r27cc308ff5113a9386899d3c8f8b29962a8498e1 -r526875e8db8cf0c97f5cd8aa90564e41d42f5fde
--- sources/canbus/MessageInterpreter.cpp	(.../MessageInterpreter.cpp)	(revision 27cc308ff5113a9386899d3c8f8b29962a8498e1)
+++ sources/canbus/MessageInterpreter.cpp	(.../MessageInterpreter.cpp)	(revision 526875e8db8cf0c97f5cd8aa90564e41d42f5fde)
@@ -375,7 +375,7 @@
     switch (identifySource(vMessage.can_id)) {
     case Can_Source::eCan_HD: ok = interpretMessage_HD(vMessage, vData); break;
     case Can_Source::eCan_DG: ok = interpretMessage_DG(vMessage, vData); break;
-    default                 :                                            break;
+    default                 :      logUnhandledMessage(vMessage       ); break; // ok is still false.
     }
     return ok;
 }
@@ -674,10 +674,9 @@
 bool MessageInterpreter::logUnhandledMessage(const Message &vMessage) const {
     bool ok = false;
     quint16 id = vMessage.actionId;
-    if (_messageList.contains(id)) {
+    QString logString;    if (_messageList.contains(id)) {
         ok = true;
         QStringList items = _messageList[id];
-        QString logString;
         int index = 0;
         for ( int i = 0; i < items.count(); i++ ) {
             QString item = items[i];
@@ -728,5 +727,8 @@
         }
         LOG_DATUM(logString);
     }
+    else {
+        LOG_DEBUG(QString("Undefined unhandled message [%1]").arg(id, 0, 16));
+    }
     return ok;
 }
Index: sources/main.h
===================================================================
diff -u -r27cc308ff5113a9386899d3c8f8b29962a8498e1 -r526875e8db8cf0c97f5cd8aa90564e41d42f5fde
--- sources/main.h	(.../main.h)	(revision 27cc308ff5113a9386899d3c8f8b29962a8498e1)
+++ sources/main.h	(.../main.h)	(revision 526875e8db8cf0c97f5cd8aa90564e41d42f5fde)
@@ -61,6 +61,7 @@
 extern bool       gSendEmptyKeepAwake       ;
 extern bool       gFakeSeqAtBegin           ;
 extern bool       gDisableUnhandledReport   ;
+extern bool       gEnableDialinUnhandled    ;
 extern bool       gDisableTimeout           ;
 extern bool       gDisableAlarmNoMinimize   ;
 //--------------------------------------------------------------------------------//