diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index 1c9f4c6..19eca29 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -1921,45 +1921,6 @@
     }
 
     /**
-     * get the information about a specific network link
-     * @hide
-     */
-    public LinkQualityInfo getLinkQualityInfo(int networkType) {
-        try {
-            LinkQualityInfo li = mService.getLinkQualityInfo(networkType);
-            return li;
-        } catch (RemoteException e) {
-            return null;
-        }
-    }
-
-    /**
-     * get the information of currently active network link
-     * @hide
-     */
-    public LinkQualityInfo getActiveLinkQualityInfo() {
-        try {
-            LinkQualityInfo li = mService.getActiveLinkQualityInfo();
-            return li;
-        } catch (RemoteException e) {
-            return null;
-        }
-    }
-
-    /**
-     * get the information of all network links
-     * @hide
-     */
-    public LinkQualityInfo[] getAllLinkQualityInfo() {
-        try {
-            LinkQualityInfo[] li = mService.getAllLinkQualityInfo();
-            return li;
-        } catch (RemoteException e) {
-            return null;
-        }
-    }
-
-    /**
      * Set sign in error notification to visible or in visible
      *
      * @param visible
@@ -2381,15 +2342,14 @@
      * successfully finding a network for the applications request.  Retrieve it with
      * {@link android.content.Intent#getParcelableExtra(String)}.
      */
-    public static final String EXTRA_NETWORK_REQUEST_NETWORK = "networkRequestNetwork";
+    public static final String EXTRA_NETWORK = "android.net.extra.NETWORK";
 
     /**
      * The lookup key for a {@link NetworkRequest} object included with the intent after
      * successfully finding a network for the applications request.  Retrieve it with
      * {@link android.content.Intent#getParcelableExtra(String)}.
      */
-    public static final String EXTRA_NETWORK_REQUEST_NETWORK_REQUEST =
-            "networkRequestNetworkRequest";
+    public static final String EXTRA_NETWORK_REQUEST = "android.net.extra.NETWORK_REQUEST";
 
 
     /**
@@ -2405,8 +2365,8 @@
      * &lt;receiver&gt; tag in an AndroidManifest.xml file
      * <p>
      * The operation Intent is delivered with two extras, a {@link Network} typed
-     * extra called {@link #EXTRA_NETWORK_REQUEST_NETWORK} and a {@link NetworkRequest}
-     * typed extra called {@link #EXTRA_NETWORK_REQUEST_NETWORK_REQUEST} containing
+     * extra called {@link #EXTRA_NETWORK} and a {@link NetworkRequest}
+     * typed extra called {@link #EXTRA_NETWORK_REQUEST} containing
      * the original requests parameters.  It is important to create a new,
      * {@link NetworkCallback} based request before completing the processing of the
      * Intent to reserve the network or it will be released shortly after the Intent
diff --git a/core/java/android/net/IConnectivityManager.aidl b/core/java/android/net/IConnectivityManager.aidl
index a7bbc53..79f920e 100644
--- a/core/java/android/net/IConnectivityManager.aidl
+++ b/core/java/android/net/IConnectivityManager.aidl
@@ -17,7 +17,6 @@
 package android.net;
 
 import android.app.PendingIntent;
-import android.net.LinkQualityInfo;
 import android.net.LinkProperties;
 import android.net.Network;
 import android.net.NetworkCapabilities;
@@ -133,12 +132,6 @@
 
     String getMobileRedirectedProvisioningUrl();
 
-    LinkQualityInfo getLinkQualityInfo(int networkType);
-
-    LinkQualityInfo getActiveLinkQualityInfo();
-
-    LinkQualityInfo[] getAllLinkQualityInfo();
-
     void setProvisioningNotificationVisible(boolean visible, int networkType, in String action);
 
     void setAirplaneMode(boolean enable);
@@ -170,4 +163,5 @@
 
     boolean addVpnAddress(String address, int prefixLength);
     boolean removeVpnAddress(String address, int prefixLength);
+    boolean setUnderlyingNetworksForVpn(in Network[] networks);
 }
diff --git a/core/java/android/net/NetworkState.java b/core/java/android/net/NetworkState.java
index 2e0e9e4..d26c70d 100644
--- a/core/java/android/net/NetworkState.java
+++ b/core/java/android/net/NetworkState.java
@@ -29,20 +29,23 @@
     public final NetworkInfo networkInfo;
     public final LinkProperties linkProperties;
     public final NetworkCapabilities networkCapabilities;
+    public final Network network;
     /** Currently only used by testing. */
     public final String subscriberId;
     public final String networkId;
 
     public NetworkState(NetworkInfo networkInfo, LinkProperties linkProperties,
-            NetworkCapabilities networkCapabilities) {
-        this(networkInfo, linkProperties, networkCapabilities, null, null);
+            NetworkCapabilities networkCapabilities, Network network) {
+        this(networkInfo, linkProperties, networkCapabilities, network, null, null);
     }
 
     public NetworkState(NetworkInfo networkInfo, LinkProperties linkProperties,
-            NetworkCapabilities networkCapabilities, String subscriberId, String networkId) {
+            NetworkCapabilities networkCapabilities, Network network, String subscriberId,
+            String networkId) {
         this.networkInfo = networkInfo;
         this.linkProperties = linkProperties;
         this.networkCapabilities = networkCapabilities;
+        this.network = network;
         this.subscriberId = subscriberId;
         this.networkId = networkId;
     }
@@ -51,6 +54,7 @@
         networkInfo = in.readParcelable(null);
         linkProperties = in.readParcelable(null);
         networkCapabilities = in.readParcelable(null);
+        network = in.readParcelable(null);
         subscriberId = in.readString();
         networkId = in.readString();
     }
@@ -65,6 +69,7 @@
         out.writeParcelable(networkInfo, flags);
         out.writeParcelable(linkProperties, flags);
         out.writeParcelable(networkCapabilities, flags);
+        out.writeParcelable(network, flags);
         out.writeString(subscriberId);
         out.writeString(networkId);
     }
diff --git a/core/tests/coretests/src/android/net/NetworkStatsHistoryTest.java b/core/tests/coretests/src/android/net/NetworkStatsHistoryTest.java
index b181122..9a08f41 100644
--- a/core/tests/coretests/src/android/net/NetworkStatsHistoryTest.java
+++ b/core/tests/coretests/src/android/net/NetworkStatsHistoryTest.java
@@ -451,6 +451,40 @@
         assertIndexBeforeAfter(stats, 4, 4, Long.MAX_VALUE);
     }
 
+    public void testIntersects() throws Exception {
+        final long BUCKET_SIZE = HOUR_IN_MILLIS;
+        stats = new NetworkStatsHistory(BUCKET_SIZE);
+
+        final long FIRST_START = TEST_START;
+        final long FIRST_END = FIRST_START + (2 * HOUR_IN_MILLIS);
+        final long SECOND_START = TEST_START + WEEK_IN_MILLIS;
+        final long SECOND_END = SECOND_START + HOUR_IN_MILLIS;
+        final long THIRD_START = TEST_START + (2 * WEEK_IN_MILLIS);
+        final long THIRD_END = THIRD_START + (2 * HOUR_IN_MILLIS);
+
+        stats.recordData(FIRST_START, FIRST_END,
+                new NetworkStats.Entry(1024L, 10L, 2048L, 20L, 2L));
+        stats.recordData(SECOND_START, SECOND_END,
+                new NetworkStats.Entry(1024L, 10L, 2048L, 20L, 2L));
+        stats.recordData(THIRD_START, THIRD_END,
+                new NetworkStats.Entry(1024L, 10L, 2048L, 20L, 2L));
+
+        assertFalse(stats.intersects(10, 20));
+        assertFalse(stats.intersects(TEST_START + YEAR_IN_MILLIS, TEST_START + YEAR_IN_MILLIS + 1));
+        assertFalse(stats.intersects(Long.MAX_VALUE, Long.MIN_VALUE));
+
+        assertTrue(stats.intersects(Long.MIN_VALUE, Long.MAX_VALUE));
+        assertTrue(stats.intersects(10, TEST_START + YEAR_IN_MILLIS));
+        assertTrue(stats.intersects(TEST_START, TEST_START));
+        assertTrue(stats.intersects(TEST_START + DAY_IN_MILLIS, TEST_START + DAY_IN_MILLIS + 1));
+        assertTrue(stats.intersects(TEST_START + DAY_IN_MILLIS, Long.MAX_VALUE));
+        assertTrue(stats.intersects(TEST_START + 1, Long.MAX_VALUE));
+
+        assertFalse(stats.intersects(Long.MIN_VALUE, TEST_START - 1));
+        assertTrue(stats.intersects(Long.MIN_VALUE, TEST_START));
+        assertTrue(stats.intersects(Long.MIN_VALUE, TEST_START + 1));
+    }
+
     private static void assertIndexBeforeAfter(
             NetworkStatsHistory stats, int before, int after, long time) {
         assertEquals("unexpected before", before, stats.getIndexBefore(time));
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 17889ea..8b3739d 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -65,7 +65,6 @@
 import android.net.LinkAddress;
 import android.net.LinkProperties;
 import android.net.LinkProperties.CompareResult;
-import android.net.LinkQualityInfo;
 import android.net.MobileDataStateTracker;
 import android.net.Network;
 import android.net.NetworkAgent;
@@ -256,7 +255,6 @@
 
     private Context mContext;
     private int mNetworkPreference;
-    private int mActiveDefaultNetwork = TYPE_NONE;
     // 0 is full bad, 100 is full good
     private int mDefaultInetConditionPublished = 0;
 
@@ -819,20 +817,85 @@
         }
     }
 
-    /**
-     * Check if UID should be blocked from using the network represented by the given networkType.
-     * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type.
-     */
-    private boolean isNetworkBlocked(int networkType, int uid) {
-        return isNetworkWithLinkPropertiesBlocked(getLinkPropertiesForType(networkType), uid);
+    private NetworkState getFilteredNetworkState(int networkType, int uid) {
+        NetworkInfo info = null;
+        LinkProperties lp = null;
+        NetworkCapabilities nc = null;
+        Network network = null;
+
+        if (mLegacyTypeTracker.isTypeSupported(networkType)) {
+            NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
+            if (nai != null) {
+                synchronized (nai) {
+                    info = new NetworkInfo(nai.networkInfo);
+                    lp = new LinkProperties(nai.linkProperties);
+                    nc = new NetworkCapabilities(nai.networkCapabilities);
+                    network = new Network(nai.network);
+                }
+                info.setType(networkType);
+            } else {
+                info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), "");
+                info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null);
+                info.setIsAvailable(true);
+                lp = new LinkProperties();
+                nc = new NetworkCapabilities();
+                network = null;
+            }
+            info = getFilteredNetworkInfo(info, lp, uid);
+        }
+
+        return new NetworkState(info, lp, nc, network);
     }
 
-    /**
-     * Check if UID should be blocked from using the network represented by the given
-     * NetworkAgentInfo.
-     */
-    private boolean isNetworkBlocked(NetworkAgentInfo nai, int uid) {
-        return isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid);
+    private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) {
+        if (network == null) {
+            return null;
+        }
+        synchronized (mNetworkForNetId) {
+            return mNetworkForNetId.get(network.netId);
+        }
+    };
+
+    private NetworkState getUnfilteredActiveNetworkState(int uid) {
+        NetworkInfo info = null;
+        LinkProperties lp = null;
+        NetworkCapabilities nc = null;
+        Network network = null;
+
+        NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId);
+
+        if (!mLockdownEnabled) {
+            int user = UserHandle.getUserId(uid);
+            synchronized (mVpns) {
+                Vpn vpn = mVpns.get(user);
+                if (vpn != null && vpn.appliesToUid(uid)) {
+                    // getUnderlyingNetworks() returns:
+                    // null => the VPN didn't specify anything, so we use the default.
+                    // empty array => the VPN explicitly said "no default network".
+                    // non-empty array => the VPN specified one or more default networks; we use the
+                    //                    first one.
+                    Network[] networks = vpn.getUnderlyingNetworks();
+                    if (networks != null) {
+                        if (networks.length > 0) {
+                            nai = getNetworkAgentInfoForNetwork(networks[0]);
+                        } else {
+                            nai = null;
+                        }
+                    }
+                }
+            }
+        }
+
+        if (nai != null) {
+            synchronized (nai) {
+                info = new NetworkInfo(nai.networkInfo);
+                lp = new LinkProperties(nai.linkProperties);
+                nc = new NetworkCapabilities(nai.networkCapabilities);
+                network = new Network(nai.network);
+            }
+        }
+
+        return new NetworkState(info, lp, nc, network);
     }
 
     /**
@@ -859,40 +922,16 @@
     /**
      * Return a filtered {@link NetworkInfo}, potentially marked
      * {@link DetailedState#BLOCKED} based on
-     * {@link #isNetworkBlocked}.
-     * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type.
+     * {@link #isNetworkWithLinkPropertiesBlocked}.
      */
-    private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) {
-        NetworkInfo info = getNetworkInfoForType(networkType);
-        return getFilteredNetworkInfo(info, networkType, uid);
-    }
-
-    /*
-     * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type.
-     */
-    private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, int networkType, int uid) {
-        if (isNetworkBlocked(networkType, uid)) {
-            // network is blocked; clone and override state
-            info = new NetworkInfo(info);
-            info.setDetailedState(DetailedState.BLOCKED, null, null);
-            if (VDBG) log("returning Blocked NetworkInfo");
-        }
-        if (mLockdownTracker != null) {
-            info = mLockdownTracker.augmentNetworkInfo(info);
-            if (VDBG) log("returning Locked NetworkInfo");
-        }
-        return info;
-    }
-
-    private NetworkInfo getFilteredNetworkInfo(NetworkAgentInfo nai, int uid) {
-        NetworkInfo info = nai.networkInfo;
-        if (isNetworkBlocked(nai, uid)) {
+    private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) {
+        if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) {
             // network is blocked; clone and override state
             info = new NetworkInfo(info);
             info.setDetailedState(DetailedState.BLOCKED, null, null);
             if (DBG) log("returning Blocked NetworkInfo");
         }
-        if (mLockdownTracker != null) {
+        if (info != null && mLockdownTracker != null) {
             info = mLockdownTracker.augmentNetworkInfo(info);
             if (DBG) log("returning Locked NetworkInfo");
         }
@@ -910,7 +949,8 @@
     public NetworkInfo getActiveNetworkInfo() {
         enforceAccessPermission();
         final int uid = Binder.getCallingUid();
-        return getNetworkInfo(mActiveDefaultNetwork, uid);
+        NetworkState state = getUnfilteredActiveNetworkState(uid);
+        return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid);
     }
 
     /**
@@ -945,8 +985,7 @@
 
         NetworkInfo provNi = getProvisioningNetworkInfo();
         if (provNi == null) {
-            final int uid = Binder.getCallingUid();
-            provNi = getNetworkInfo(mActiveDefaultNetwork, uid);
+            provNi = getActiveNetworkInfo();
         }
         if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi);
         return provNi;
@@ -954,62 +993,50 @@
 
     public NetworkInfo getActiveNetworkInfoUnfiltered() {
         enforceAccessPermission();
-        if (isNetworkTypeValid(mActiveDefaultNetwork)) {
-            return getNetworkInfoForType(mActiveDefaultNetwork);
-        }
-        return null;
+        final int uid = Binder.getCallingUid();
+        NetworkState state = getUnfilteredActiveNetworkState(uid);
+        return state.networkInfo;
     }
 
     @Override
     public NetworkInfo getActiveNetworkInfoForUid(int uid) {
         enforceConnectivityInternalPermission();
-        return getNetworkInfo(mActiveDefaultNetwork, uid);
+        NetworkState state = getUnfilteredActiveNetworkState(uid);
+        return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid);
     }
 
     @Override
     public NetworkInfo getNetworkInfo(int networkType) {
         enforceAccessPermission();
         final int uid = Binder.getCallingUid();
-        return getNetworkInfo(networkType, uid);
+        NetworkState state = getFilteredNetworkState(networkType, uid);
+        return state.networkInfo;
     }
 
-    private NetworkInfo getNetworkInfo(int networkType, int uid) {
+    @Override
+    public NetworkInfo getNetworkInfoForNetwork(Network network) {
+        enforceAccessPermission();
+        final int uid = Binder.getCallingUid();
         NetworkInfo info = null;
-        if (isNetworkTypeValid(networkType)) {
-            if (getNetworkInfoForType(networkType) != null) {
-                info = getFilteredNetworkInfo(networkType, uid);
+        NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
+        if (nai != null) {
+            synchronized (nai) {
+                info = new NetworkInfo(nai.networkInfo);
+                info = getFilteredNetworkInfo(info, nai.linkProperties, uid);
             }
         }
         return info;
     }
 
     @Override
-    public NetworkInfo getNetworkInfoForNetwork(Network network) {
-        enforceAccessPermission();
-        if (network == null) return null;
-
-        final int uid = Binder.getCallingUid();
-        NetworkAgentInfo nai = null;
-        synchronized (mNetworkForNetId) {
-            nai = mNetworkForNetId.get(network.netId);
-        }
-        if (nai == null) return null;
-        synchronized (nai) {
-            if (nai.networkInfo == null) return null;
-
-            return getFilteredNetworkInfo(nai, uid);
-        }
-    }
-
-    @Override
     public NetworkInfo[] getAllNetworkInfo() {
         enforceAccessPermission();
-        final int uid = Binder.getCallingUid();
         final ArrayList<NetworkInfo> result = Lists.newArrayList();
         for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE;
                 networkType++) {
-            if (getNetworkInfoForType(networkType) != null) {
-                result.add(getFilteredNetworkInfo(networkType, uid));
+            NetworkInfo info = getNetworkInfo(networkType);
+            if (info != null) {
+                result.add(info);
             }
         }
         return result.toArray(new NetworkInfo[result.size()]);
@@ -1019,11 +1046,11 @@
     public Network getNetworkForType(int networkType) {
         enforceAccessPermission();
         final int uid = Binder.getCallingUid();
-        if (isNetworkBlocked(networkType, uid)) {
-            return null;
+        NetworkState state = getFilteredNetworkState(networkType, uid);
+        if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) {
+            return state.network;
         }
-        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
-        return (nai == null) ? null : nai.network;
+        return null;
     }
 
     @Override
@@ -1041,7 +1068,7 @@
     @Override
     public boolean isNetworkSupported(int networkType) {
         enforceAccessPermission();
-        return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null));
+        return mLegacyTypeTracker.isTypeSupported(networkType);
     }
 
     /**
@@ -1054,14 +1081,20 @@
      */
     @Override
     public LinkProperties getActiveLinkProperties() {
-        return getLinkPropertiesForType(mActiveDefaultNetwork);
+        enforceAccessPermission();
+        final int uid = Binder.getCallingUid();
+        NetworkState state = getUnfilteredActiveNetworkState(uid);
+        return state.linkProperties;
     }
 
     @Override
     public LinkProperties getLinkPropertiesForType(int networkType) {
         enforceAccessPermission();
-        if (isNetworkTypeValid(networkType)) {
-            return getLinkPropertiesForTypeInternal(networkType);
+        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
+        if (nai != null) {
+            synchronized (nai) {
+                return new LinkProperties(nai.linkProperties);
+            }
         }
         return null;
     }
@@ -1070,11 +1103,7 @@
     @Override
     public LinkProperties getLinkProperties(Network network) {
         enforceAccessPermission();
-        NetworkAgentInfo nai = null;
-        synchronized (mNetworkForNetId) {
-            nai = mNetworkForNetId.get(network.netId);
-        }
-
+        NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
         if (nai != null) {
             synchronized (nai) {
                 return new LinkProperties(nai.linkProperties);
@@ -1086,10 +1115,7 @@
     @Override
     public NetworkCapabilities getNetworkCapabilities(Network network) {
         enforceAccessPermission();
-        NetworkAgentInfo nai = null;
-        synchronized (mNetworkForNetId) {
-            nai = mNetworkForNetId.get(network.netId);
-        }
+        NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
         if (nai != null) {
             synchronized (nai) {
                 return new NetworkCapabilities(nai.networkCapabilities);
@@ -1105,36 +1131,22 @@
         final ArrayList<NetworkState> result = Lists.newArrayList();
         for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE;
                 networkType++) {
-            if (getNetworkInfoForType(networkType) != null) {
-                final NetworkInfo info = getFilteredNetworkInfo(networkType, uid);
-                final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType);
-                final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType);
-                result.add(new NetworkState(info, lp, netcap));
+            NetworkState state = getFilteredNetworkState(networkType, uid);
+            if (state.networkInfo != null) {
+                result.add(state);
             }
         }
         return result.toArray(new NetworkState[result.size()]);
     }
 
-    private NetworkState getNetworkStateUnchecked(int networkType) {
-        if (isNetworkTypeValid(networkType)) {
-            NetworkInfo info = getNetworkInfoForType(networkType);
-            if (info != null) {
-                return new NetworkState(info,
-                        getLinkPropertiesForTypeInternal(networkType),
-                        getNetworkCapabilitiesForType(networkType));
-            }
-        }
-        return null;
-    }
-
     @Override
     public NetworkQuotaInfo getActiveNetworkQuotaInfo() {
         enforceAccessPermission();
-
+        final int uid = Binder.getCallingUid();
         final long token = Binder.clearCallingIdentity();
         try {
-            final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork);
-            if (state != null) {
+            final NetworkState state = getUnfilteredActiveNetworkState(uid);
+            if (state.networkInfo != null) {
                 try {
                     return mPolicyManager.getNetworkQuotaInfo(state);
                 } catch (RemoteException e) {
@@ -1149,17 +1161,18 @@
     @Override
     public boolean isActiveNetworkMetered() {
         enforceAccessPermission();
+        final int uid = Binder.getCallingUid();
         final long token = Binder.clearCallingIdentity();
         try {
-            return isNetworkMeteredUnchecked(mActiveDefaultNetwork);
+            return isActiveNetworkMeteredUnchecked(uid);
         } finally {
             Binder.restoreCallingIdentity(token);
         }
     }
 
-    private boolean isNetworkMeteredUnchecked(int networkType) {
-        final NetworkState state = getNetworkStateUnchecked(networkType);
-        if (state != null) {
+    private boolean isActiveNetworkMeteredUnchecked(int uid) {
+        final NetworkState state = getUnfilteredActiveNetworkState(uid);
+        if (state.networkInfo != null) {
             try {
                 return mPolicyManager.isNetworkMetered(state);
             } catch (RemoteException e) {
@@ -1330,16 +1343,18 @@
 
             // kick off connectivity change broadcast for active network, since
             // global background policy change is radical.
-            final int networkType = mActiveDefaultNetwork;
-            if (isNetworkTypeValid(networkType)) {
-                final NetworkStateTracker tracker = mNetTrackers[networkType];
-                if (tracker != null) {
-                    final NetworkInfo info = tracker.getNetworkInfo();
-                    if (info != null && info.isConnected()) {
-                        sendConnectedBroadcast(info);
-                    }
-                }
-            }
+            // TODO: Dead code; remove.
+            //
+            // final int networkType = mActiveDefaultNetwork;
+            // if (isNetworkTypeValid(networkType)) {
+            //     final NetworkStateTracker tracker = mNetTrackers[networkType];
+            //     if (tracker != null) {
+            //         final NetworkInfo info = tracker.getNetworkInfo();
+            //         if (info != null && info.isConnected()) {
+            //             sendConnectedBroadcast(info);
+            //         }
+            //     }
+            // }
         }
     };
 
@@ -1766,16 +1781,6 @@
         pw.println();
         pw.decreaseIndent();
 
-        pw.print("mActiveDefaultNetwork: " + mActiveDefaultNetwork);
-        if (mActiveDefaultNetwork != TYPE_NONE) {
-            NetworkInfo activeNetworkInfo = getActiveNetworkInfo();
-            if (activeNetworkInfo != null) {
-                pw.print(" " + activeNetworkInfo.getState() +
-                         "/" + activeNetworkInfo.getDetailedState());
-            }
-        }
-        pw.println();
-
         pw.println("mLegacyTypeTracker:");
         pw.increaseIndent();
         mLegacyTypeTracker.dump(pw);
@@ -1804,10 +1809,7 @@
 
     private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) {
         if (nai.network == null) return false;
-        final NetworkAgentInfo officialNai;
-        synchronized (mNetworkForNetId) {
-            officialNai = mNetworkForNetId.get(nai.network.netId);
-        }
+        final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network);
         if (officialNai != null && officialNai.equals(nai)) return true;
         if (officialNai != null || VDBG) {
             loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai +
@@ -2003,7 +2005,7 @@
                          * to the link that may have incorrectly setup by the lower
                          * levels.
                          */
-                        LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType());
+                        LinkProperties lp = getLinkPropertiesForType(info.getType());
                         if (DBG) {
                             log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp);
                         }
@@ -2145,7 +2147,6 @@
             }
             if (nai.networkRequests.get(mDefaultRequest.requestId) != null) {
                 removeDataActivityTracking(nai);
-                mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE;
                 notifyLockdownVpn(nai);
                 requestNetworkTransitionWakelock(nai.name());
             }
@@ -2556,10 +2557,7 @@
         if (network == null) return;
 
         final int uid = Binder.getCallingUid();
-        NetworkAgentInfo nai = null;
-        synchronized (mNetworkForNetId) {
-            nai = mNetworkForNetId.get(network.netId);
-        }
+        NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
         if (nai == null) return;
         if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid);
         synchronized (nai) {
@@ -2567,7 +2565,7 @@
             // which isn't meant to work on uncreated networks.
             if (!nai.created) return;
 
-            if (isNetworkBlocked(nai, uid)) return;
+            if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return;
 
             nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid);
         }
@@ -2598,7 +2596,7 @@
             String exclList = "";
             String pacFileUrl = "";
             if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) ||
-                    (proxyProperties.getPacFileUrl() != null))) {
+                    !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) {
                 if (!proxyProperties.isValid()) {
                     if (DBG)
                         log("Invalid proxy properties, ignoring: " + proxyProperties.toString());
@@ -2608,7 +2606,7 @@
                 host = mGlobalProxy.getHost();
                 port = mGlobalProxy.getPort();
                 exclList = mGlobalProxy.getExclusionListAsString();
-                if (proxyProperties.getPacFileUrl() != null) {
+                if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) {
                     pacFileUrl = proxyProperties.getPacFileUrl().toString();
                 }
             } else {
@@ -2670,7 +2668,7 @@
 
     private void handleApplyDefaultProxy(ProxyInfo proxy) {
         if (proxy != null && TextUtils.isEmpty(proxy.getHost())
-                && (proxy.getPacFileUrl() == null)) {
+                && Uri.EMPTY.equals(proxy.getPacFileUrl())) {
             proxy = null;
         }
         synchronized (mProxyLock) {
@@ -2686,7 +2684,8 @@
             // global (to get the correct local port), and send a broadcast.
             // TODO: Switch PacManager to have its own message to send back rather than
             // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy.
-            if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null)
+            if ((mGlobalProxy != null) && (proxy != null)
+                    && (!Uri.EMPTY.equals(proxy.getPacFileUrl()))
                     && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) {
                 mGlobalProxy = proxy;
                 sendProxyBroadcast(mGlobalProxy);
@@ -2769,42 +2768,6 @@
         Slog.e(TAG, s);
     }
 
-    int convertFeatureToNetworkType(int networkType, String feature) {
-        int usedNetworkType = networkType;
-
-        if(networkType == ConnectivityManager.TYPE_MOBILE) {
-            if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) {
-                usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS;
-            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) {
-                usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL;
-            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) ||
-                    TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) {
-                usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN;
-            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) {
-                usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI;
-            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) {
-                usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA;
-            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) {
-                usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS;
-            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) {
-                usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS;
-            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) {
-                usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY;
-            } else {
-                Slog.e(TAG, "Can't match any mobile netTracker!");
-            }
-        } else if (networkType == ConnectivityManager.TYPE_WIFI) {
-            if (TextUtils.equals(feature, "p2p")) {
-                usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P;
-            } else {
-                Slog.e(TAG, "Can't match any wifi netTracker!");
-            }
-        } else {
-            Slog.e(TAG, "Unexpected network type");
-        }
-        return usedNetworkType;
-    }
-
     private static <T> T checkNotNull(T value, String message) {
         if (value == null) {
             throw new NullPointerException(message);
@@ -2813,7 +2776,7 @@
     }
 
     /**
-     * Prepare for a VPN application. This method is used by system-privileged apps.
+     * Prepare for a VPN application.
      * Permissions are checked in Vpn class.
      * @hide
      */
@@ -3290,43 +3253,6 @@
         }
     };
 
-    @Override
-    public LinkQualityInfo getLinkQualityInfo(int networkType) {
-        enforceAccessPermission();
-        if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) {
-            return mNetTrackers[networkType].getLinkQualityInfo();
-        } else {
-            return null;
-        }
-    }
-
-    @Override
-    public LinkQualityInfo getActiveLinkQualityInfo() {
-        enforceAccessPermission();
-        if (isNetworkTypeValid(mActiveDefaultNetwork) &&
-                mNetTrackers[mActiveDefaultNetwork] != null) {
-            return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo();
-        } else {
-            return null;
-        }
-    }
-
-    @Override
-    public LinkQualityInfo[] getAllLinkQualityInfo() {
-        enforceAccessPermission();
-        final ArrayList<LinkQualityInfo> result = Lists.newArrayList();
-        for (NetworkStateTracker tracker : mNetTrackers) {
-            if (tracker != null) {
-                LinkQualityInfo li = tracker.getLinkQualityInfo();
-                if (li != null) {
-                    result.add(li);
-                }
-            }
-        }
-
-        return result.toArray(new LinkQualityInfo[result.size()]);
-    }
-
     /* Infrastructure for network sampling */
 
     private void handleNetworkSamplingTimeout() {
@@ -3615,6 +3541,7 @@
     private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos =
             new HashMap<Messenger, NetworkAgentInfo>();
 
+    // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated.
     private final NetworkRequest mDefaultRequest;
 
     private boolean isDefaultNetwork(NetworkAgentInfo nai) {
@@ -3626,10 +3553,12 @@
             int currentScore, NetworkMisc networkMisc) {
         enforceConnectivityInternalPermission();
 
+        // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network
+        // satisfies mDefaultRequest.
         NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(),
             new NetworkInfo(networkInfo), new LinkProperties(linkProperties),
             new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler,
-            new NetworkMisc(networkMisc));
+            new NetworkMisc(networkMisc), mDefaultRequest);
         synchronized (this) {
             nai.networkMonitor.systemReady = mSystemReady;
         }
@@ -3839,9 +3768,8 @@
             int notificationType) {
         if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE) {
             Intent intent = new Intent();
-            intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST_NETWORK, nri.request);
-            intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST_NETWORK_REQUEST,
-                    networkAgent.network);
+            intent.putExtra(ConnectivityManager.EXTRA_NETWORK, nri.request);
+            intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, networkAgent.network);
             sendIntent(nri.mPendingIntent, intent);
         }
         // else not handled
@@ -3931,7 +3859,6 @@
 
     private void makeDefault(NetworkAgentInfo newNetwork) {
         if (DBG) log("Switching to new default network: " + newNetwork);
-        mActiveDefaultNetwork = newNetwork.networkInfo.getType();
         setupDataActivityTracking(newNetwork);
         try {
             mNetd.setDefaultNetId(newNetwork.network.netId);
@@ -3973,7 +3900,7 @@
     //                 another higher scoring network by another call to rematchNetworkAndRequests()
     //                 and this other call also lingered newNetwork.
     private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, boolean nascent) {
-        if (!newNetwork.created) loge("ERROR: uncreated network being rematched.");
+        if (!newNetwork.created) return;
         if (nascent && !newNetwork.validated) loge("ERROR: nascent network not validated.");
         boolean keep = newNetwork.isVPN();
         boolean isNewDefault = false;
@@ -4036,7 +3963,6 @@
                     if (mDefaultRequest.requestId == nri.request.requestId) {
                         isNewDefault = true;
                         // TODO: Remove following line.  It's redundant with makeDefault call.
-                        mActiveDefaultNetwork = newNetwork.networkInfo.getType();
                         if (newNetwork.linkProperties != null) {
                             updateTcpBufferSizes(newNetwork);
                             setDefaultDnsSystemProperties(
@@ -4272,7 +4198,7 @@
         final int oldScore = nai.getCurrentScore();
         nai.setCurrentScore(score);
 
-        if (nai.created) rematchAllNetworksAndRequests(nai, oldScore);
+        rematchAllNetworksAndRequests(nai, oldScore);
 
         sendUpdatedScoreToFactories(nai);
     }
@@ -4371,44 +4297,6 @@
         return "UNKNOWN";
     }
 
-    private LinkProperties getLinkPropertiesForTypeInternal(int networkType) {
-        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
-        if (nai != null) {
-            synchronized (nai) {
-                return new LinkProperties(nai.linkProperties);
-            }
-        }
-        return new LinkProperties();
-    }
-
-    private NetworkInfo getNetworkInfoForType(int networkType) {
-        if (!mLegacyTypeTracker.isTypeSupported(networkType))
-            return null;
-
-        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
-        if (nai != null) {
-            NetworkInfo result = new NetworkInfo(nai.networkInfo);
-            result.setType(networkType);
-            return result;
-        } else {
-            NetworkInfo result = new NetworkInfo(
-                    networkType, 0, ConnectivityManager.getNetworkTypeName(networkType), "");
-            result.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null);
-            result.setIsAvailable(true);
-            return result;
-        }
-    }
-
-    private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) {
-        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
-        if (nai != null) {
-            synchronized (nai) {
-                return new NetworkCapabilities(nai.networkCapabilities);
-            }
-        }
-        return new NetworkCapabilities();
-    }
-
     @Override
     public boolean addVpnAddress(String address, int prefixLength) {
         throwIfLockdownEnabled();
@@ -4426,4 +4314,13 @@
             return mVpns.get(user).removeAddress(address, prefixLength);
         }
     }
+
+    @Override
+    public boolean setUnderlyingNetworksForVpn(Network[] networks) {
+        throwIfLockdownEnabled();
+        int user = UserHandle.getUserId(Binder.getCallingUid());
+        synchronized (mVpns) {
+            return mVpns.get(user).setUnderlyingNetworks(networks);
+        }
+    }
 }
diff --git a/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java b/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
index 0dd818f..4af920a 100644
--- a/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
+++ b/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
@@ -78,7 +78,7 @@
 
     public NetworkAgentInfo(Messenger messenger, AsyncChannel ac, NetworkInfo info,
             LinkProperties lp, NetworkCapabilities nc, int score, Context context, Handler handler,
-            NetworkMisc misc) {
+            NetworkMisc misc, NetworkRequest defaultRequest) {
         this.messenger = messenger;
         asyncChannel = ac;
         network = null;
@@ -86,7 +86,7 @@
         linkProperties = lp;
         networkCapabilities = nc;
         currentScore = score;
-        networkMonitor = new NetworkMonitor(context, handler, this);
+        networkMonitor = new NetworkMonitor(context, handler, this, defaultRequest);
         networkMisc = misc;
         created = false;
         validated = false;
diff --git a/services/tests/servicestests/src/com/android/server/NetworkStatsServiceTest.java b/services/tests/servicestests/src/com/android/server/NetworkStatsServiceTest.java
index c115339..f9a03fc 100644
--- a/services/tests/servicestests/src/com/android/server/NetworkStatsServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/NetworkStatsServiceTest.java
@@ -1006,7 +1006,7 @@
         info.setDetailedState(DetailedState.CONNECTED, null, null);
         final LinkProperties prop = new LinkProperties();
         prop.setInterfaceName(TEST_IFACE);
-        return new NetworkState(info, prop, null, null, TEST_SSID);
+        return new NetworkState(info, prop, null, null, null, TEST_SSID);
     }
 
     private static NetworkState buildMobile3gState(String subscriberId) {
@@ -1015,7 +1015,7 @@
         info.setDetailedState(DetailedState.CONNECTED, null, null);
         final LinkProperties prop = new LinkProperties();
         prop.setInterfaceName(TEST_IFACE);
-        return new NetworkState(info, prop, null, subscriberId, null);
+        return new NetworkState(info, prop, null, null, subscriberId, null);
     }
 
     private static NetworkState buildMobile4gState(String iface) {
@@ -1023,7 +1023,7 @@
         info.setDetailedState(DetailedState.CONNECTED, null, null);
         final LinkProperties prop = new LinkProperties();
         prop.setInterfaceName(iface);
-        return new NetworkState(info, prop, null);
+        return new NetworkState(info, prop, null, null);
     }
 
     private NetworkStats buildEmptyStats() {