net: Add -natpmp command line option

src/qt/optionsdialog.cpp

@@ -53,7 +53,7 @@ OptionsDialog::OptionsDialog(QWidget *parent, bool enableWallet) :
 #endif
     connect(this, &QDialog::accepted, [this](){
         QSettings settings;
-        model->node().mapPort(settings.value("fUseUPnP").toBool());
+        model->node().mapPort(settings.value("fUseUPnP").toBool(), settings.value("fUseNatpmp").toBool());
     });
 
     ui->proxyIp->setEnabled(false);

src/qt/optionsmodel.cpp

@@ -124,6 +124,13 @@ void OptionsModel::Init(bool resetSettings)
     if (!gArgs.SoftSetBoolArg("-upnp", settings.value("fUseUPnP").toBool()))
         addOverriddenOption("-upnp");
 
+    if (!settings.contains("fUseNatpmp")) {
+        settings.setValue("fUseNatpmp", DEFAULT_NATPMP);
+    }
+    if (!gArgs.SoftSetBoolArg("-natpmp", settings.value("fUseNatpmp").toBool())) {
+        addOverriddenOption("-natpmp");
+    }
+
     if (!settings.contains("fListen"))
         settings.setValue("fListen", DEFAULT_LISTEN);
     if (!gArgs.SoftSetBoolArg("-listen", settings.value("fListen").toBool()))
@@ -283,7 +290,13 @@ QVariant OptionsModel::data(const QModelIndex & index, int role) const
             return settings.value("fUseUPnP");
 #else
             return false;
-#endif
+#endif // USE_UPNP
+        case MapPortNatpmp:
+#ifdef USE_NATPMP
+            return settings.value("fUseNatpmp");
+#else
+            return false;
+#endif // USE_NATPMP
         case MinimizeOnClose:
             return fMinimizeOnClose;
 
@@ -356,6 +369,9 @@ bool OptionsModel::setData(const QModelIndex & index, const QVariant & value, in
         case MapPortUPnP: // core option - can be changed on-the-fly
             settings.setValue("fUseUPnP", value.toBool());
             break;
+        case MapPortNatpmp: // core option - can be changed on-the-fly
+            settings.setValue("fUseNatpmp", value.toBool());
+            break;
         case MinimizeOnClose:
             fMinimizeOnClose = value.toBool();
             settings.setValue("fMinimizeOnClose", fMinimizeOnClose);

src/qt/optionsmodel.h

@@ -48,6 +48,7 @@ public:
         ShowTrayIcon,           // bool
         MinimizeToTray,         // bool
         MapPortUPnP,            // bool
+        MapPortNatpmp,          // bool
         MinimizeOnClose,        // bool
         ProxyUse,               // bool
         ProxyIP,                // QString