diff --git a/services/java/com/android/server/ConnectivityService.java b/services/java/com/android/server/ConnectivityService.java
index 5c7951a..41a0e6b 100644
--- a/services/java/com/android/server/ConnectivityService.java
+++ b/services/java/com/android/server/ConnectivityService.java
@@ -2757,6 +2757,15 @@
             }
             setBufferSize(bufferSizes);
         }
+
+        final String defaultRwndKey = "net.tcp.default_init_rwnd";
+        int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0);
+        Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(),
+            Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue);
+        final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd";
+        if (rwndValue != 0) {
+            SystemProperties.set(sysctlKey, rwndValue.toString());
+        }
     }
 
     /**
@@ -4053,6 +4062,14 @@
      */
     private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5;
 
+    /**
+     * The mobile network is provisioning
+     */
+    private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6;
+
+    private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false);
+    private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false);
+
     private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false);
 
     @Override
@@ -4123,11 +4140,25 @@
                                 setProvNotificationVisible(true,
                                         ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(),
                                         url);
+                                // Mark that we've got a provisioning network and
+                                // Disable Mobile Data until user actually starts provisioning.
+                                mIsProvisioningNetwork.set(true);
+                                MobileDataStateTracker mdst = (MobileDataStateTracker)
+                                        mNetTrackers[ConnectivityManager.TYPE_MOBILE];
+                                mdst.setInternalDataEnable(false);
                             } else {
                                 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url");
                             }
                             break;
                         }
+                        case CMP_RESULT_CODE_IS_PROVISIONING: {
+                            // FIXME: Need to know when provisioning is done. Probably we can
+                            // check the completion status if successful we're done if we
+                            // "timedout" or still connected to provisioning APN turn off data?
+                            if (DBG) log("CheckMp.onComplete: provisioning started");
+                            mIsStartingProvisioning.set(false);
+                            break;
+                        }
                         default: {
                             loge("CheckMp.onComplete: ignore unexpected result=" + result);
                             break;
@@ -4277,6 +4308,12 @@
                 return result;
             }
 
+            if (mCs.mIsStartingProvisioning.get()) {
+                result = CMP_RESULT_CODE_IS_PROVISIONING;
+                log("isMobileOk: X is provisioning result=" + result);
+                return result;
+            }
+
             // See if we've already determined we've got a provisioning connection,
             // if so we don't need to do anything active.
             MobileDataStateTracker mdstDefault = (MobileDataStateTracker)
@@ -4611,19 +4648,20 @@
     };
 
     private void handleMobileProvisioningAction(String url) {
-        // Notication mark notification as not visible
+        // Mark notification as not visible
         setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null);
 
         // If provisioning network handle as a special case,
         // otherwise launch browser with the intent directly.
-        NetworkInfo ni = getProvisioningNetworkInfo();
-        if ((ni != null) && ni.isConnectedToProvisioningNetwork()) {
-            if (DBG) log("handleMobileProvisioningAction: on provisioning network");
+        if (mIsProvisioningNetwork.get()) {
+            if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch");
+            mIsStartingProvisioning.set(true);
             MobileDataStateTracker mdst = (MobileDataStateTracker)
                     mNetTrackers[ConnectivityManager.TYPE_MOBILE];
+            mdst.setEnableFailFastMobileData(DctConstants.ENABLED);
             mdst.enableMobileProvisioning(url);
         } else {
-            if (DBG) log("handleMobileProvisioningAction: on default network");
+            if (DBG) log("handleMobileProvisioningAction: not prov network, launch browser directly");
             Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN,
                     Intent.CATEGORY_APP_BROWSER);
             newIntent.setData(Uri.parse(url));