diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractAppIdleTestCase.java b/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractAppIdleTestCase.java
index d2c0873..133a43b 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractAppIdleTestCase.java
+++ b/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractAppIdleTestCase.java
@@ -127,6 +127,19 @@
         assertBackgroundNetworkAccess(false);
     }
 
+    public void testBackgroundNetworkAccess_tempWhitelisted() throws Exception {
+        if (!isSupported()) return;
+
+        setAppIdle(true);
+        assertBackgroundNetworkAccess(false);
+
+        addTempPowerSaveModeWhitelist(TEST_APP2_PKG, TEMP_POWERSAVE_WHITELIST_DURATION_MS);
+        assertBackgroundNetworkAccess(true);
+        // Wait until the whitelist duration is expired.
+        SystemClock.sleep(TEMP_POWERSAVE_WHITELIST_DURATION_MS);
+        assertBackgroundNetworkAccess(false);
+    }
+
     public void testBackgroundNetworkAccess_disabled() throws Exception {
         if (!isSupported()) return;
 
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractRestrictBackgroundNetworkTestCase.java b/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractRestrictBackgroundNetworkTestCase.java
index 1c46396..822485e 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractRestrictBackgroundNetworkTestCase.java
+++ b/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractRestrictBackgroundNetworkTestCase.java
@@ -107,6 +107,8 @@
 
     private static final String APP_NOT_FOREGROUND_ERROR = "app_not_fg";
 
+    protected static final long TEMP_POWERSAVE_WHITELIST_DURATION_MS = 5_000; // 5 sec
+
     protected Context mContext;
     protected Instrumentation mInstrumentation;
     protected ConnectivityManager mCm;
@@ -744,6 +746,12 @@
                 + ". Full list: " + uids);
     }
 
+    protected void addTempPowerSaveModeWhitelist(String packageName, long duration)
+            throws Exception {
+        Log.i(TAG, "Adding pkg " + packageName + " to temp-power-save-mode whitelist");
+        executeShellCommand("dumpsys deviceidle tempwhitelist -d " + duration + " " + packageName);
+    }
+
     protected void assertPowerSaveModeWhitelist(String packageName, boolean expected)
             throws Exception {
         // TODO: currently the power-save mode is behaving like idle, but once it changes, we'll
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MixedModesTest.java b/tests/cts/hostside/app/src/com/android/cts/net/hostside/MixedModesTest.java
index 5248255..76332be 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MixedModesTest.java
+++ b/tests/cts/hostside/app/src/com/android/cts/net/hostside/MixedModesTest.java
@@ -15,6 +15,7 @@
  */
 package com.android.cts.net.hostside;
 
+import android.os.SystemClock;
 import android.util.Log;
 
 /**
@@ -271,4 +272,55 @@
             setDozeMode(false);
         }
     }
+
+    public void testAppIdleAndDoze_tempPowerSaveWhitelists() throws Exception {
+        if (!isSupported()) {
+            return;
+        }
+        if (!isDozeModeEnabled()) {
+            Log.i(TAG, "Skipping " + getClass() + "." + getName()
+                    + "() because device does not support Doze Mode");
+            return;
+        }
+
+        setDozeMode(true);
+        setAppIdle(true);
+
+        try {
+            assertBackgroundNetworkAccess(false);
+
+            addTempPowerSaveModeWhitelist(TEST_APP2_PKG, TEMP_POWERSAVE_WHITELIST_DURATION_MS);
+            assertBackgroundNetworkAccess(true);
+
+            // Wait until the whitelist duration is expired.
+            SystemClock.sleep(TEMP_POWERSAVE_WHITELIST_DURATION_MS);
+            assertBackgroundNetworkAccess(false);
+        } finally {
+            setAppIdle(false);
+            setDozeMode(false);
+        }
+    }
+
+    public void testAppIdleAndBatterySaver_tempPowerSaveWhitelists() throws Exception {
+        if (!isSupported()) {
+            return;
+        }
+
+        setBatterySaverMode(true);
+        setAppIdle(true);
+
+        try {
+            assertBackgroundNetworkAccess(false);
+
+            addTempPowerSaveModeWhitelist(TEST_APP2_PKG, TEMP_POWERSAVE_WHITELIST_DURATION_MS);
+            assertBackgroundNetworkAccess(true);
+
+            // Wait until the whitelist duration is expired.
+            SystemClock.sleep(TEMP_POWERSAVE_WHITELIST_DURATION_MS);
+            assertBackgroundNetworkAccess(false);
+        } finally {
+            setAppIdle(false);
+            setBatterySaverMode(false);
+        }
+    }
 }
diff --git a/tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java b/tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java
index bf3fc08..fe9d36c 100644
--- a/tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java
+++ b/tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java
@@ -146,6 +146,11 @@
                 "testBackgroundNetworkAccess_whitelisted");
     }
 
+    public void testAppIdleMetered_tempWhitelisted() throws Exception {
+        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
+                "testBackgroundNetworkAccess_tempWhitelisted");
+    }
+
     public void testAppIdleMetered_enabled() throws Exception {
         runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
                 "testBackgroundNetworkAccess_enabled");
@@ -166,6 +171,11 @@
                 "testBackgroundNetworkAccess_whitelisted");
     }
 
+    public void testAppIdleNonMetered_tempWhitelisted() throws Exception {
+        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
+                "testBackgroundNetworkAccess_tempWhitelisted");
+    }
+
     public void testAppIdleNonMetered_enabled() throws Exception {
         runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
                 "testBackgroundNetworkAccess_enabled");
@@ -261,6 +271,16 @@
                 "testDozeAndAppIdle_powerSaveWhitelists");
     }
 
+    public void testAppIdleAndDoze_tempPowerSaveWhitelists() throws Exception {
+        runDeviceTests(TEST_PKG, TEST_PKG + ".MixedModesTest",
+                "testAppIdleAndDoze_tempPowerSaveWhitelists");
+    }
+
+    public void testAppIdleAndBatterySaver_tempPowerSaveWhitelists() throws Exception {
+        runDeviceTests(TEST_PKG, TEST_PKG + ".MixedModesTest",
+                "testAppIdleAndBatterySaver_tempPowerSaveWhitelists");
+    }
+
     /*******************
      * Helper methods. *
      *******************/
diff --git a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
index e98dfcc..27dd666 100644
--- a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
@@ -16,8 +16,11 @@
 
 package android.net.cts;
 
+import static android.content.pm.PackageManager.FEATURE_TELEPHONY;
+import static android.content.pm.PackageManager.FEATURE_WIFI;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_IMS;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
+import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
 
 import android.app.PendingIntent;
@@ -29,6 +32,7 @@
 import android.content.pm.PackageManager;
 import android.net.ConnectivityManager;
 import android.net.ConnectivityManager.NetworkCallback;
+import android.net.LinkProperties;
 import android.net.Network;
 import android.net.NetworkCapabilities;
 import android.net.NetworkConfig;
@@ -50,14 +54,23 @@
 import java.io.FileNotFoundException;
 import java.io.InputStream;
 import java.io.IOException;
+import java.io.InputStreamReader;
 import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.Inet6Address;
+import java.net.InetAddress;
 import java.net.Socket;
 import java.net.InetSocketAddress;
+import java.net.URL;
+import java.net.UnknownHostException;
+import java.nio.charset.StandardCharsets;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.Scanner;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.TimeUnit;
+import libcore.io.Streams;
 
 public class ConnectivityManagerTest extends AndroidTestCase {
 
@@ -107,6 +120,8 @@
     private final HashMap<Integer, NetworkConfig> mNetworks =
             new HashMap<Integer, NetworkConfig>();
     boolean mWifiConnectAttempted;
+    private TestNetworkCallback mCellNetworkCallback;
+
 
     @Override
     protected void setUp() throws Exception {
@@ -140,6 +155,10 @@
         if (mWifiConnectAttempted) {
             disconnectFromWifi(null);
         }
+        if (cellConnectAttempted()) {
+            disconnectFromCell();
+        }
+        super.tearDown();
     }
 
     /**
@@ -246,6 +265,95 @@
         }
     }
 
+    /**
+     * Tests that connections can be opened on WiFi and cellphone networks,
+     * and that they are made from different IP addresses.
+     */
+    public void testOpenConnection() throws Exception {
+        boolean canRunTest = mPackageManager.hasSystemFeature(FEATURE_WIFI)
+                && mPackageManager.hasSystemFeature(FEATURE_TELEPHONY);
+        if (!canRunTest) {
+            Log.i(TAG,"testOpenConnection cannot execute unless device supports both WiFi "
+                    + "and a cellular connection");
+            return;
+        }
+
+        Network wifiNetwork = connectToWifi();
+        Network cellNetwork = connectToCell();
+        // This server returns the requestor's IP address as the response body.
+        URL url = new URL("http://google-ipv6test.appspot.com/ip.js?fmt=text");
+        String wifiAddressString = httpGet(wifiNetwork, url);
+        String cellAddressString = httpGet(cellNetwork, url);
+
+        assertFalse(String.format("Same address '%s' on two different networks (%s, %s)",
+                wifiAddressString, wifiNetwork, cellNetwork),
+                wifiAddressString.equals(cellAddressString));
+
+        // Sanity check that the IP addresses that the requests appeared to come from
+        // are actually on the respective networks.
+        assertOnNetwork(wifiAddressString, wifiNetwork);
+        assertOnNetwork(cellAddressString, cellNetwork);
+
+        assertFalse("Unexpectedly equal: " + wifiNetwork, wifiNetwork.equals(cellNetwork));
+    }
+
+    private Network connectToCell() throws InterruptedException {
+        if (cellConnectAttempted()) {
+            throw new IllegalStateException("Already connected");
+        }
+        NetworkRequest cellRequest = new NetworkRequest.Builder()
+                .addTransportType(TRANSPORT_CELLULAR)
+                .addCapability(NET_CAPABILITY_INTERNET)
+                .build();
+        mCellNetworkCallback = new TestNetworkCallback();
+        mCm.requestNetwork(cellRequest, mCellNetworkCallback);
+        final Network cellNetwork = mCellNetworkCallback.waitForAvailable();
+        assertNotNull("Cell network not available within timeout", cellNetwork);
+        return cellNetwork;
+    }
+
+    private boolean cellConnectAttempted() {
+        return mCellNetworkCallback != null;
+    }
+
+    private void disconnectFromCell() {
+        if (!cellConnectAttempted()) {
+            throw new IllegalStateException("Cell connection not attempted");
+        }
+        mCm.unregisterNetworkCallback(mCellNetworkCallback);
+        mCellNetworkCallback = null;
+    }
+
+    /**
+     * Performs a HTTP GET to the specified URL on the specified Network, and returns
+     * the response body decoded as UTF-8.
+     */
+    private static String httpGet(Network network, URL httpUrl) throws IOException {
+        HttpURLConnection connection = (HttpURLConnection) network.openConnection(httpUrl);
+        try {
+            InputStream inputStream = connection.getInputStream();
+            return Streams.readFully(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
+        } finally {
+            connection.disconnect();
+        }
+    }
+
+    private void assertOnNetwork(String adressString, Network network) throws UnknownHostException {
+        InetAddress address = InetAddress.getByName(adressString);
+        LinkProperties linkProperties = mCm.getLinkProperties(network);
+        // To make sure that the request went out on the right network, check that
+        // the IP address seen by the server is assigned to the expected network.
+        // We can only do this for IPv6 addresses, because in IPv4 we will likely
+        // have a private IPv4 address, and that won't match what the server sees.
+        if (address instanceof Inet6Address) {
+            assertContains(linkProperties.getAddresses(), address);
+        }
+    }
+
+    private static<T> void assertContains(Collection<T> collection, T element) {
+        assertTrue(element + " not found in " + collection, collection.contains(element));
+    }
+
     private void assertStartUsingNetworkFeatureUnsupported(int networkType, String feature) {
         try {
             mCm.startUsingNetworkFeature(networkType, feature);
@@ -324,7 +432,7 @@
      * that it would increase test coverage by much (how many devices have 3G radio but not Wifi?).
      */
     public void testRegisterNetworkCallback() {
-        if (!mPackageManager.hasSystemFeature(PackageManager.FEATURE_WIFI)) {
+        if (!mPackageManager.hasSystemFeature(FEATURE_WIFI)) {
             Log.i(TAG, "testRegisterNetworkCallback cannot execute unless device supports WiFi");
             return;
         }
@@ -364,7 +472,7 @@
      * of a {@code NetworkCallback}.
      */
     public void testRegisterNetworkCallback_withPendingIntent() {
-        if (!mPackageManager.hasSystemFeature(PackageManager.FEATURE_WIFI)) {
+        if (!mPackageManager.hasSystemFeature(FEATURE_WIFI)) {
             Log.i(TAG, "testRegisterNetworkCallback cannot execute unless device supports WiFi");
             return;
         }
@@ -458,7 +566,7 @@
      * Tests reporting of connectivity changed.
      */
     public void testConnectivityChanged_manifestRequestOnly_shouldNotReceiveIntent() {
-        if (!mPackageManager.hasSystemFeature(PackageManager.FEATURE_WIFI)) {
+        if (!mPackageManager.hasSystemFeature(FEATURE_WIFI)) {
             Log.i(TAG, "testConnectivityChanged_manifestRequestOnly_shouldNotReceiveIntent cannot execute unless device supports WiFi");
             return;
         }
@@ -475,7 +583,7 @@
     }
 
     public void testConnectivityChanged_whenRegistered_shouldReceiveIntent() {
-        if (!mPackageManager.hasSystemFeature(PackageManager.FEATURE_WIFI)) {
+        if (!mPackageManager.hasSystemFeature(FEATURE_WIFI)) {
             Log.i(TAG, "testConnectivityChanged_whenRegistered_shouldReceiveIntent cannot execute unless device supports WiFi");
             return;
         }
@@ -495,7 +603,7 @@
 
     public void testConnectivityChanged_manifestRequestOnlyPreN_shouldReceiveIntent()
             throws InterruptedException {
-        if (!mPackageManager.hasSystemFeature(PackageManager.FEATURE_WIFI)) {
+        if (!mPackageManager.hasSystemFeature(FEATURE_WIFI)) {
             Log.i(TAG, "testConnectivityChanged_manifestRequestOnlyPreN_shouldReceiveIntent cannot execute unless device supports WiFi");
             return;
         }