Added a configure intent

app/src/main/java/com/frostnerd/dnschanger/threading/VPNRunnable.java

 package com.frostnerd.dnschanger.threading;
 
+import android.app.PendingIntent;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.net.VpnService;
@@ -13,6 +14,7 @@ import com.frostnerd.dnschanger.DNSChanger;
 import com.frostnerd.dnschanger.LogFactory;
 import com.frostnerd.dnschanger.activities.BackgroundVpnConfigureActivity;
 import com.frostnerd.dnschanger.activities.InvalidDNSDialogActivity;
+import com.frostnerd.dnschanger.activities.MainActivity;
 import com.frostnerd.dnschanger.database.entities.IPPortPair;
 import com.frostnerd.dnschanger.services.DNSVpnService;
 import com.frostnerd.dnschanger.util.PreferencesAccessor;
@@ -215,6 +217,7 @@ public class VPNRunnable implements Runnable {
             builder.setMtu(1500);
         }else builder.setMtu(1280);
         LogFactory.writeMessage(service, new String[]{LOG_TAG, "[VPNTHREAD]", ID}, "Tunnel interface created, not yet connected");
+        builder.setConfigureIntent(PendingIntent.getActivity(service, 1, new Intent(service, MainActivity.class), PendingIntent.FLAG_CANCEL_CURRENT));
     }
 
     private void addDNSServer(@NonNull String server, boolean addRoute, boolean ipv6){