diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index 9e8acd0..d2636eb 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -468,6 +468,7 @@
      *         {@link #requestNetwork(NetworkRequest, NetworkCallback)} to request a network that
      *         provides the {@link NetworkCapabilities#NET_CAPABILITY_MMS} capability.
      */
+    @Deprecated
     public static final int TYPE_MOBILE_MMS  = 2;
     /**
      * A SUPL-specific Mobile data connection.  This network type may use the
@@ -479,6 +480,7 @@
      *         {@link #requestNetwork(NetworkRequest, NetworkCallback)} to request a network that
      *         provides the {@link NetworkCapabilities#NET_CAPABILITY_SUPL} capability.
      */
+    @Deprecated
     public static final int TYPE_MOBILE_SUPL = 3;
     /**
      * A DUN-specific Mobile data connection.  This network type may use the
@@ -496,6 +498,7 @@
      *         {@link #requestNetwork(NetworkRequest, NetworkCallback)} to request a network that
      *         uses the {@link NetworkCapabilities#TRANSPORT_CELLULAR} transport.
      */
+    @Deprecated
     public static final int TYPE_MOBILE_HIPRI = 5;
     /**
      * The WiMAX data connection.  When active, all data traffic
@@ -626,6 +629,7 @@
      * @deprecated All APIs accepting a network type are deprecated. There should be no need to
      *             validate a network type.
      */
+    @Deprecated
     public static boolean isNetworkTypeValid(int networkType) {
         return networkType >= 0 && networkType <= MAX_NETWORK_TYPE;
     }
@@ -733,13 +737,12 @@
      *             preference.  Instead we use dynamic network properties of
      *             the networks to describe their precedence.
      */
+    @Deprecated
     public void setNetworkPreference(int preference) {
     }
 
     /**
      * Retrieves the current preferred network type.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an integer representing the preferred network type
      *
@@ -748,6 +751,8 @@
      *             preference.  Instead we use dynamic network properties of
      *             the networks to describe their precedence.
      */
+    @Deprecated
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public int getNetworkPreference() {
         return TYPE_NONE;
     }
@@ -758,12 +763,11 @@
      * You should always check {@link NetworkInfo#isConnected()} before initiating
      * network traffic. This may return {@code null} when there is no default
      * network.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return a {@link NetworkInfo} object for the current default network
      *        or {@code null} if no default network is currently active
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkInfo getActiveNetworkInfo() {
         try {
             return mService.getActiveNetworkInfo();
@@ -778,12 +782,11 @@
      * network disconnects, the returned {@code Network} object will no longer
      * be usable.  This will return {@code null} when there is no default
      * network.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return a {@link Network} object for the current default network or
      *        {@code null} if no default network is currently active
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public Network getActiveNetwork() {
         try {
             return mService.getActiveNetwork();
@@ -798,14 +801,13 @@
      * network disconnects, the returned {@code Network} object will no longer
      * be usable.  This will return {@code null} when there is no default
      * network for the UID.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}.
      *
      * @return a {@link Network} object for the current default network for the
      *         given UID or {@code null} if no default network is currently active
      *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public Network getActiveNetworkForUid(int uid) {
         return getActiveNetworkForUid(uid, false);
     }
@@ -866,8 +868,6 @@
      * Returns details about the currently active default data network
      * for a given uid.  This is for internal use only to avoid spying
      * other apps.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}
      *
      * @return a {@link NetworkInfo} object for the current default network
      *        for the given uid or {@code null} if no default network is
@@ -875,6 +875,7 @@
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public NetworkInfo getActiveNetworkInfoForUid(int uid) {
         return getActiveNetworkInfoForUid(uid, false);
     }
@@ -891,8 +892,6 @@
     /**
      * Returns connection status information about a particular
      * network type.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param networkType integer specifying which networkType in
      *        which you're interested.
@@ -904,6 +903,8 @@
      *             of the same type. Use {@link #getAllNetworks} and
      *             {@link #getNetworkInfo(android.net.Network)} instead.
      */
+    @Deprecated
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkInfo getNetworkInfo(int networkType) {
         try {
             return mService.getNetworkInfo(networkType);
@@ -915,8 +916,6 @@
     /**
      * Returns connection status information about a particular
      * Network.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param network {@link Network} specifying which network
      *        in which you're interested.
@@ -924,6 +923,7 @@
      *        network or {@code null} if the {@code Network}
      *        is not valid.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkInfo getNetworkInfo(Network network) {
         return getNetworkInfoForUid(network, Process.myUid(), false);
     }
@@ -940,8 +940,6 @@
     /**
      * Returns connection status information about all network
      * types supported by the device.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of {@link NetworkInfo} objects.  Check each
      * {@link NetworkInfo#getType} for which type each applies.
@@ -950,6 +948,8 @@
      *             of the same type. Use {@link #getAllNetworks} and
      *             {@link #getNetworkInfo(android.net.Network)} instead.
      */
+    @Deprecated
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkInfo[] getAllNetworkInfo() {
         try {
             return mService.getAllNetworkInfo();
@@ -962,14 +962,13 @@
      * Returns the {@link Network} object currently serving a given type, or
      * null if the given type is not connected.
      *
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
-     *
      * @hide
      * @deprecated This method does not support multiple connected networks
      *             of the same type. Use {@link #getAllNetworks} and
      *             {@link #getNetworkInfo(android.net.Network)} instead.
      */
+    @Deprecated
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public Network getNetworkForType(int networkType) {
         try {
             return mService.getNetworkForType(networkType);
@@ -981,11 +980,10 @@
     /**
      * Returns an array of all {@link Network} currently tracked by the
      * framework.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of {@link Network} objects.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public Network[] getAllNetworks() {
         try {
             return mService.getAllNetworks();
@@ -1009,8 +1007,6 @@
 
     /**
      * Returns the IP information for the current default network.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return a {@link LinkProperties} object describing the IP info
      *        for the current default network, or {@code null} if there
@@ -1018,6 +1014,7 @@
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public LinkProperties getActiveLinkProperties() {
         try {
             return mService.getActiveLinkProperties();
@@ -1028,8 +1025,6 @@
 
     /**
      * Returns the IP information for a given network type.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param networkType the network type of interest.
      * @return a {@link LinkProperties} object describing the IP info
@@ -1042,6 +1037,8 @@
      *             {@link #getNetworkInfo(android.net.Network)}, and
      *             {@link #getLinkProperties(android.net.Network)} instead.
      */
+    @Deprecated
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public LinkProperties getLinkProperties(int networkType) {
         try {
             return mService.getLinkPropertiesForType(networkType);
@@ -1053,12 +1050,11 @@
     /**
      * Get the {@link LinkProperties} for the given {@link Network}.  This
      * will return {@code null} if the network is unknown.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param network The {@link Network} object identifying the network in question.
      * @return The {@link LinkProperties} for the network, or {@code null}.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public LinkProperties getLinkProperties(Network network) {
         try {
             return mService.getLinkProperties(network);
@@ -1070,12 +1066,11 @@
     /**
      * Get the {@link android.net.NetworkCapabilities} for the given {@link Network}.  This
      * will return {@code null} if the network is unknown.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param network The {@link Network} object identifying the network in question.
      * @return The {@link android.net.NetworkCapabilities} for the network, or {@code null}.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkCapabilities getNetworkCapabilities(Network network) {
         try {
             return mService.getNetworkCapabilities(network);
@@ -1123,7 +1118,9 @@
      *             {@link #requestNetwork(NetworkRequest, NetworkCallback)} API.
      *             In {@link VERSION_CODES#M}, and above, this method is unsupported and will
      *             throw {@code UnsupportedOperationException} if called.
+     * @removed
      */
+    @Deprecated
     public int startUsingNetworkFeature(int networkType, String feature) {
         checkLegacyRoutingApiAccess();
         NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature);
@@ -1178,7 +1175,9 @@
      *             {@link #unregisterNetworkCallback(NetworkCallback)} API.
      *             In {@link VERSION_CODES#M}, and above, this method is unsupported and will
      *             throw {@code UnsupportedOperationException} if called.
+     * @removed
      */
+    @Deprecated
     public int stopUsingNetworkFeature(int networkType, String feature) {
         checkLegacyRoutingApiAccess();
         NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature);
@@ -1634,7 +1633,9 @@
      *             {@link #bindProcessToNetwork} and {@link Network#getSocketFactory} API.
      *             In {@link VERSION_CODES#M}, and above, this method is unsupported and will
      *             throw {@code UnsupportedOperationException} if called.
+     * @removed
      */
+    @Deprecated
     public boolean requestRouteToHost(int networkType, int hostAddress) {
         return requestRouteToHostAddress(networkType, NetworkUtils.intToInetAddress(hostAddress));
     }
@@ -1657,6 +1658,7 @@
      * @deprecated Deprecated in favor of the {@link #requestNetwork} and
      *             {@link #bindProcessToNetwork} API.
      */
+    @Deprecated
     public boolean requestRouteToHostAddress(int networkType, InetAddress hostAddress) {
         checkLegacyRoutingApiAccess();
         try {
@@ -1709,11 +1711,9 @@
      * network is active. Quota status can change rapidly, so these values
      * shouldn't be cached.
      *
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
-     *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkQuotaInfo getActiveNetworkQuotaInfo() {
         try {
             return mService.getActiveNetworkQuotaInfo();
@@ -1726,6 +1726,7 @@
      * @hide
      * @deprecated Talk to TelephonyManager directly
      */
+    @Deprecated
     public boolean getMobileDataEnabled() {
         IBinder b = ServiceManager.getService(Context.TELEPHONY_SERVICE);
         if (b != null) {
@@ -1892,6 +1893,7 @@
      *               situations where a Context pointer is unavailable.
      * @hide
      */
+    @Deprecated
     static ConnectivityManager getInstanceOrNull() {
         return sInstance;
     }
@@ -1901,6 +1903,7 @@
      *               situations where a Context pointer is unavailable.
      * @hide
      */
+    @Deprecated
     private static ConnectivityManager getInstance() {
         if (getInstanceOrNull() == null) {
             throw new IllegalStateException("No ConnectivityManager yet constructed");
@@ -1911,13 +1914,12 @@
     /**
      * Get the set of tetherable, available interfaces.  This list is limited by
      * device configuration and current interface existence.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more Strings of tetherable interface names.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetherableIfaces() {
         try {
             return mService.getTetherableIfaces();
@@ -1928,13 +1930,12 @@
 
     /**
      * Get the set of tethered interfaces.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more String of currently tethered interface names.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetheredIfaces() {
         try {
             return mService.getTetheredIfaces();
@@ -1950,14 +1951,13 @@
      * may cause them to reset to the available state.
      * {@link ConnectivityManager#getLastTetherError} can be used to get more
      * information on the cause of the errors.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more String indicating the interface names
      *        which failed to tether.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetheringErroredIfaces() {
         try {
             return mService.getTetheringErroredIfaces();
@@ -2046,14 +2046,13 @@
      * Check if the device allows for tethering.  It may be disabled via
      * {@code ro.tether.denied} system property, Settings.TETHER_SUPPORTED or
      * due to device configuration.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return a boolean - {@code true} indicating Tethering is supported.
      *
      * {@hide}
      */
     @SystemApi
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public boolean isTetheringSupported() {
         try {
             return mService.isTetheringSupported();
@@ -2161,14 +2160,13 @@
      * Get the list of regular expressions that define any tetherable
      * USB network interfaces.  If USB tethering is not supported by the
      * device, this list should be empty.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more regular expression Strings defining
      *        what interfaces are considered tetherable usb interfaces.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetherableUsbRegexs() {
         try {
             return mService.getTetherableUsbRegexs();
@@ -2181,14 +2179,13 @@
      * Get the list of regular expressions that define any tetherable
      * Wifi network interfaces.  If Wifi tethering is not supported by the
      * device, this list should be empty.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more regular expression Strings defining
      *        what interfaces are considered tetherable wifi interfaces.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetherableWifiRegexs() {
         try {
             return mService.getTetherableWifiRegexs();
@@ -2201,14 +2198,13 @@
      * Get the list of regular expressions that define any tetherable
      * Bluetooth network interfaces.  If Bluetooth tethering is not supported by the
      * device, this list should be empty.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more regular expression Strings defining
      *        what interfaces are considered tetherable bluetooth interfaces.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetherableBluetoothRegexs() {
         try {
             return mService.getTetherableBluetoothRegexs();
@@ -2272,8 +2268,6 @@
     /**
      * Get a more detailed error code after a Tethering or Untethering
      * request asynchronously failed.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param iface The name of the interface of interest
      * @return error The error code of the last error tethering or untethering the named
@@ -2281,6 +2275,7 @@
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public int getLastTetherError(String iface) {
         try {
             return mService.getLastTetherError(iface);
@@ -2318,6 +2313,7 @@
      * @deprecated Use {@link #reportNetworkConnectivity} which allows reporting both
      *             working and non-working connectivity.
      */
+    @Deprecated
     public void reportBadNetwork(Network network) {
         try {
             // One of these will be ignored because it matches system's current state.
@@ -2353,13 +2349,12 @@
      * for typical HTTP proxies - they are general network dependent.  However if you're
      * doing something unusual like general internal filtering this may be useful.  On
      * a private network where the proxy is not accessible, you may break HTTP using this.
-     * <p>This method requires the caller to hold the permission
-     * android.Manifest.permission#CONNECTIVITY_INTERNAL.
      *
      * @param p A {@link ProxyInfo} object defining the new global
      *        HTTP proxy.  A {@code null} value will clear the global HTTP proxy.
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public void setGlobalProxy(ProxyInfo p) {
         try {
             mService.setGlobalProxy(p);
@@ -2425,14 +2420,13 @@
      * hardware supports it.  For example a GSM phone without a SIM
      * should still return {@code true} for mobile data, but a wifi only
      * tablet would return {@code false}.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param networkType The network type we'd like to check
      * @return {@code true} if supported, else {@code false}
      *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public boolean isNetworkSupported(int networkType) {
         try {
             return mService.isNetworkSupported(networkType);
@@ -2448,12 +2442,11 @@
      * battery/performance issues. You should check this before doing large
      * data transfers, and warn the user or delay the operation until another
      * network is available.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return {@code true} if large transfers should be avoided, otherwise
      *        {@code false}.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public boolean isActiveNetworkMetered() {
         try {
             return mService.isActiveNetworkMetered();
@@ -2520,6 +2513,7 @@
      * {@hide}
      * @deprecated Doesn't properly deal with multiple connected networks of the same type.
      */
+    @Deprecated
     public void setProvisioningNotificationVisible(boolean visible, int networkType,
             String action) {
         try {
@@ -2531,13 +2525,12 @@
 
     /**
      * Set the value for enabling/disabling airplane mode
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}.
      *
      * @param enable whether to enable airplane mode or not
      *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public void setAirplaneMode(boolean enable) {
         try {
             mService.setAirplaneMode(enable);
@@ -3161,14 +3154,13 @@
      * Registers to receive notifications about all networks which satisfy the given
      * {@link NetworkRequest}.  The callbacks will continue to be called until
      * either the application exits or link #unregisterNetworkCallback(NetworkCallback)} is called.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param request {@link NetworkRequest} describing this request.
      * @param networkCallback The {@link NetworkCallback} that the system will call as suitable
      *                        networks change state.
      *                        The callback is invoked on the default internal Handler.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public void registerNetworkCallback(NetworkRequest request, NetworkCallback networkCallback) {
         registerNetworkCallback(request, networkCallback, getDefaultHandler());
     }
@@ -3177,14 +3169,13 @@
      * Registers to receive notifications about all networks which satisfy the given
      * {@link NetworkRequest}.  The callbacks will continue to be called until
      * either the application exits or link #unregisterNetworkCallback(NetworkCallback)} is called.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param request {@link NetworkRequest} describing this request.
      * @param networkCallback The {@link NetworkCallback} that the system will call as suitable
      *                        networks change state.
      * @param handler {@link Handler} to specify the thread upon which the callback will be invoked.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public void registerNetworkCallback(
             NetworkRequest request, NetworkCallback networkCallback, Handler handler) {
         CallbackHandler cbHandler = new CallbackHandler(handler);
@@ -3216,13 +3207,12 @@
      * <p>
      * The request may be released normally by calling
      * {@link #unregisterNetworkCallback(android.app.PendingIntent)}.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      * @param request {@link NetworkRequest} describing this request.
      * @param operation Action to perform when the network is available (corresponds
      *                  to the {@link NetworkCallback#onAvailable} call.  Typically
      *                  comes from {@link PendingIntent#getBroadcast}. Cannot be null.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public void registerNetworkCallback(NetworkRequest request, PendingIntent operation) {
         checkPendingIntentNotNull(operation);
         try {
@@ -3238,13 +3228,12 @@
      * Registers to receive notifications about changes in the system default network. The callbacks
      * will continue to be called until either the application exits or
      * {@link #unregisterNetworkCallback(NetworkCallback)} is called.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param networkCallback The {@link NetworkCallback} that the system will call as the
      *                        system default network changes.
      *                        The callback is invoked on the default internal Handler.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public void registerDefaultNetworkCallback(NetworkCallback networkCallback) {
         registerDefaultNetworkCallback(networkCallback, getDefaultHandler());
     }
@@ -3253,13 +3242,12 @@
      * Registers to receive notifications about changes in the system default network. The callbacks
      * will continue to be called until either the application exits or
      * {@link #unregisterNetworkCallback(NetworkCallback)} is called.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param networkCallback The {@link NetworkCallback} that the system will call as the
      *                        system default network changes.
      * @param handler {@link Handler} to specify the thread upon which the callback will be invoked.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public void registerDefaultNetworkCallback(NetworkCallback networkCallback, Handler handler) {
         // This works because if the NetworkCapabilities are null,
         // ConnectivityService takes them from the default request.
@@ -3355,15 +3343,13 @@
      * {@code always} is true, then the choice is remembered, so that the next time the user
      * connects to this network, the system will switch to it.
      *
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}
-     *
      * @param network The network to accept.
      * @param accept Whether to accept the network even if unvalidated.
      * @param always Whether to remember this choice in the future.
      *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public void setAcceptUnvalidated(Network network, boolean accept, boolean always) {
         try {
             mService.setAcceptUnvalidated(network, accept, always);
@@ -3378,13 +3364,11 @@
      * {@code config_networkAvoidBadWifi} configuration variable is set to 0 and the {@code
      * NETWORK_AVOID_BAD_WIFI setting is unset}.
      *
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}
-     *
      * @param network The network to accept.
      *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public void setAvoidUnvalidated(Network network) {
         try {
             mService.setAvoidUnvalidated(network);
@@ -3461,15 +3445,13 @@
      * for multipath data transfer on this network when it is not the system default network.
      * Applications desiring to use multipath network protocols should call this method before
      * each such operation.
-     * <p>
-     * This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param network The network on which the application desires to use multipath data.
      *                If {@code null}, this method will return the a preference that will generally
      *                apply to metered networks.
      * @return a bitwise OR of zero or more of the  {@code MULTIPATH_PREFERENCE_*} constants.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public @MultipathPreference int getMultipathPreference(Network network) {
         try {
             return mService.getMultipathPreference(network);
@@ -3535,6 +3517,7 @@
      *             {@link #bindProcessToNetwork} instead.  {@code bindProcessToNetwork}
      *             is a direct replacement.
      */
+    @Deprecated
     public static boolean setProcessDefaultNetwork(Network network) {
         int netId = (network == null) ? NETID_UNSET : network.netId;
         if (netId == NetworkUtils.getBoundNetworkForProcess()) {
@@ -3581,6 +3564,7 @@
      *             {@link IllegalStateException}.  Use {@link #getBoundNetworkForProcess} instead.
      *             {@code getBoundNetworkForProcess} is a direct replacement.
      */
+    @Deprecated
     public static Network getProcessDefaultNetwork() {
         int netId = NetworkUtils.getBoundNetworkForProcess();
         if (netId == NETID_UNSET) return null;
@@ -3625,6 +3609,7 @@
      * @hide
      * @deprecated This is strictly for legacy usage to support {@link #startUsingNetworkFeature}.
      */
+    @Deprecated
     public static boolean setProcessDefaultNetworkForHostResolution(Network network) {
         return NetworkUtils.bindProcessToNetworkForHostResolution(
                 network == null ? NETID_UNSET : network.netId);
diff --git a/core/java/android/net/NetworkCapabilities.java b/core/java/android/net/NetworkCapabilities.java
index 1da0d28..bf7207c 100644
--- a/core/java/android/net/NetworkCapabilities.java
+++ b/core/java/android/net/NetworkCapabilities.java
@@ -418,8 +418,10 @@
      */
     public static final int TRANSPORT_WIFI_AWARE = 5;
 
-    private static final int MIN_TRANSPORT = TRANSPORT_CELLULAR;
-    private static final int MAX_TRANSPORT = TRANSPORT_WIFI_AWARE;
+    /** @hide */
+    public static final int MIN_TRANSPORT = TRANSPORT_CELLULAR;
+    /** @hide */
+    public static final int MAX_TRANSPORT = TRANSPORT_WIFI_AWARE;
 
     private static final String[] TRANSPORT_NAMES = {
         "CELLULAR",
diff --git a/core/java/android/net/NetworkUtils.java b/core/java/android/net/NetworkUtils.java
index a677d73..fe9563d 100644
--- a/core/java/android/net/NetworkUtils.java
+++ b/core/java/android/net/NetworkUtils.java
@@ -92,6 +92,7 @@
      *
      * @deprecated This is strictly for legacy usage to support startUsingNetworkFeature().
      */
+    @Deprecated
     public native static boolean bindProcessToNetworkForHostResolution(int netId);
 
     /**
diff --git a/core/tests/coretests/src/android/net/IpPrefixTest.java b/core/tests/coretests/src/android/net/IpPrefixTest.java
index fcc6389..4f2387d 100644
--- a/core/tests/coretests/src/android/net/IpPrefixTest.java
+++ b/core/tests/coretests/src/android/net/IpPrefixTest.java
@@ -18,14 +18,14 @@
 
 import android.net.IpPrefix;
 import android.os.Parcel;
-import static android.test.MoreAsserts.assertNotEqual;
 import android.test.suitebuilder.annotation.SmallTest;
-
-import static org.junit.Assert.assertArrayEquals;
 import java.net.InetAddress;
 import java.util.Random;
 import junit.framework.TestCase;
 
+import static android.test.MoreAsserts.assertNotEqual;
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
 
 public class IpPrefixTest extends TestCase {
 
@@ -242,25 +242,42 @@
 
     @SmallTest
     public void testHashCode() {
-        IpPrefix p;
-        int oldCode = -1;
+        IpPrefix p = new IpPrefix(new byte[4], 0);
         Random random = new Random();
         for (int i = 0; i < 100; i++) {
+            final IpPrefix oldP = p;
             if (random.nextBoolean()) {
                 // IPv4.
                 byte[] b = new byte[4];
                 random.nextBytes(b);
                 p = new IpPrefix(b, random.nextInt(33));
-                assertNotEqual(oldCode, p.hashCode());
-                oldCode = p.hashCode();
             } else {
                 // IPv6.
                 byte[] b = new byte[16];
                 random.nextBytes(b);
                 p = new IpPrefix(b, random.nextInt(129));
-                assertNotEqual(oldCode, p.hashCode());
-                oldCode = p.hashCode();
             }
+            if (p.equals(oldP)) {
+              assertEquals(p.hashCode(), oldP.hashCode());
+            }
+            if (p.hashCode() != oldP.hashCode()) {
+              assertNotEqual(p, oldP);
+            }
+        }
+    }
+
+    @SmallTest
+    public void testHashCodeIsNotConstant() {
+        IpPrefix[] prefixes = {
+            new IpPrefix("2001:db8:f00::ace:d00d/127"),
+            new IpPrefix("192.0.2.0/23"),
+            new IpPrefix("::/0"),
+            new IpPrefix("0.0.0.0/0"),
+        };
+        for (int i = 0; i < prefixes.length; i++) {
+          for (int j = i + 1; j < prefixes.length; j++) {
+            assertNotEqual(prefixes[i].hashCode(), prefixes[j].hashCode());
+          }
         }
     }
 
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 7b4981e..b4f27f5 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -29,13 +29,6 @@
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED;
-import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL;
-import static android.net.NetworkPolicyManager.RULE_ALLOW_METERED;
-import static android.net.NetworkPolicyManager.RULE_NONE;
-import static android.net.NetworkPolicyManager.RULE_REJECT_ALL;
-import static android.net.NetworkPolicyManager.RULE_REJECT_METERED;
-import static android.net.NetworkPolicyManager.RULE_TEMPORARY_ALLOW_METERED;
-import static android.net.NetworkPolicyManager.uidRulesToString;
 import static com.android.internal.util.Preconditions.checkNotNull;
 
 import android.annotation.Nullable;
@@ -107,7 +100,6 @@
 import android.security.KeyStore;
 import android.telephony.TelephonyManager;
 import android.text.TextUtils;
-import android.util.ArraySet;
 import android.util.LocalLog;
 import android.util.LocalLog.ReadOnlyLocalLog;
 import android.util.Log;
@@ -127,10 +119,12 @@
 import com.android.internal.net.VpnInfo;
 import com.android.internal.net.VpnProfile;
 import com.android.internal.util.AsyncChannel;
+import com.android.internal.util.DumpUtils;
 import com.android.internal.util.IndentingPrintWriter;
 import com.android.internal.util.MessageUtils;
 import com.android.internal.util.WakeupMessage;
 import com.android.internal.util.XmlUtils;
+import com.android.server.LocalServices;
 import com.android.server.am.BatteryStatsService;
 import com.android.server.connectivity.DataConnectionStats;
 import com.android.server.connectivity.KeepaliveTracker;
@@ -149,6 +143,7 @@
 import com.android.server.connectivity.Vpn;
 import com.android.server.net.BaseNetworkObserver;
 import com.android.server.net.LockdownVpnTracker;
+import com.android.server.net.NetworkPolicyManagerInternal;
 
 import com.google.android.collect.Lists;
 
@@ -228,18 +223,6 @@
     private boolean mLockdownEnabled;
     private LockdownVpnTracker mLockdownTracker;
 
-    /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */
-    private Object mRulesLock = new Object();
-    /** Currently active network rules by UID. */
-    @GuardedBy("mRulesLock")
-    private SparseIntArray mUidRules = new SparseIntArray();
-    /** Set of ifaces that are costly. */
-    @GuardedBy("mRulesLock")
-    private ArraySet<String> mMeteredIfaces = new ArraySet<>();
-    /** Flag indicating if background data is restricted. */
-    @GuardedBy("mRulesLock")
-    private boolean mRestrictBackground;
-
     final private Context mContext;
     private int mNetworkPreference;
     // 0 is full bad, 100 is full good
@@ -253,6 +236,7 @@
     private INetworkManagementService mNetd;
     private INetworkStatsService mStatsService;
     private INetworkPolicyManager mPolicyManager;
+    private NetworkPolicyManagerInternal mPolicyManagerInternal;
 
     private String mCurrentTcpBufferSizes;
 
@@ -729,12 +713,15 @@
         mNetd = checkNotNull(netManager, "missing INetworkManagementService");
         mStatsService = checkNotNull(statsService, "missing INetworkStatsService");
         mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager");
+        mPolicyManagerInternal = checkNotNull(
+                LocalServices.getService(NetworkPolicyManagerInternal.class),
+                "missing NetworkPolicyManagerInternal");
+
         mKeyStore = KeyStore.getInstance();
         mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);
 
         try {
-            mPolicyManager.setConnectivityListener(mPolicyListener);
-            mRestrictBackground = mPolicyManager.getRestrictBackground();
+            mPolicyManager.registerListener(mPolicyListener);
         } catch (RemoteException e) {
             // ouch, no rules updates means some processes may never get network
             loge("unable to register INetworkPolicyListener" + e);
@@ -1008,51 +995,22 @@
     private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid,
             boolean ignoreBlocked) {
         // Networks aren't blocked when ignoring blocked status
-        if (ignoreBlocked) return false;
+        if (ignoreBlocked) {
+            return false;
+        }
         // Networks are never blocked for system services
-        if (isSystem(uid)) return false;
-
-        final boolean networkMetered;
-        final int uidRules;
-
+        // TODO: consider moving this check to NetworkPolicyManagerInternal.isUidNetworkingBlocked.
+        if (isSystem(uid)) {
+            return false;
+        }
         synchronized (mVpns) {
             final Vpn vpn = mVpns.get(UserHandle.getUserId(uid));
             if (vpn != null && vpn.isBlockingUid(uid)) {
                 return true;
             }
         }
-
         final String iface = (lp == null ? "" : lp.getInterfaceName());
-        synchronized (mRulesLock) {
-            networkMetered = mMeteredIfaces.contains(iface);
-            uidRules = mUidRules.get(uid, RULE_NONE);
-        }
-
-        boolean allowed = true;
-        // Check Data Saver Mode first...
-        if (networkMetered) {
-            if ((uidRules & RULE_REJECT_METERED) != 0) {
-                if (LOGD_RULES) Log.d(TAG, "uid " + uid + " is blacklisted");
-                // Explicitly blacklisted.
-                allowed = false;
-            } else {
-                allowed = !mRestrictBackground
-                      || (uidRules & RULE_ALLOW_METERED) != 0
-                      || (uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0;
-                if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when"
-                        + " mRestrictBackground=" + mRestrictBackground
-                        + ", whitelisted=" + ((uidRules & RULE_ALLOW_METERED) != 0)
-                        + ", tempWhitelist= + ((uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0)"
-                        + ": " + allowed);
-            }
-        }
-        // ...then power restrictions.
-        if (allowed) {
-            allowed = (uidRules & RULE_REJECT_ALL) == 0;
-            if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when"
-                    + " rule is " + uidRulesToString(uidRules) + ": " + allowed);
-        }
-        return !allowed;
+        return mPolicyManagerInternal.isUidNetworkingBlocked(uid, iface);
     }
 
     private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) {
@@ -1498,76 +1456,24 @@
         return true;
     }
 
-    private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() {
+    private final INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() {
         @Override
         public void onUidRulesChanged(int uid, int uidRules) {
-            // caller is NPMS, since we only register with them
-            if (LOGD_RULES) {
-                log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")");
-            }
-
-            synchronized (mRulesLock) {
-                // skip update when we've already applied rules
-                final int oldRules = mUidRules.get(uid, RULE_NONE);
-                if (oldRules == uidRules) return;
-
-                if (uidRules == RULE_NONE) {
-                    mUidRules.delete(uid);
-                } else {
-                    mUidRules.put(uid, uidRules);
-                }
-            }
-
             // TODO: notify UID when it has requested targeted updates
         }
-
         @Override
         public void onMeteredIfacesChanged(String[] meteredIfaces) {
-            // caller is NPMS, since we only register with them
-            if (LOGD_RULES) {
-                log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")");
-            }
-
-            synchronized (mRulesLock) {
-                mMeteredIfaces.clear();
-                for (String iface : meteredIfaces) {
-                    mMeteredIfaces.add(iface);
-                }
-            }
         }
-
         @Override
         public void onRestrictBackgroundChanged(boolean restrictBackground) {
-            // caller is NPMS, since we only register with them
-            if (LOGD_RULES) {
-                log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")");
-            }
-
-            synchronized (mRulesLock) {
-                mRestrictBackground = restrictBackground;
-            }
-
+            // TODO: relocate this specific callback in Tethering.
             if (restrictBackground) {
                 log("onRestrictBackgroundChanged(true): disabling tethering");
                 mTethering.untetherAll();
             }
         }
-
         @Override
-        public void onRestrictBackgroundWhitelistChanged(int uid, boolean whitelisted) {
-            if (LOGD_RULES) {
-                // caller is NPMS, since we only register with them
-                log("onRestrictBackgroundWhitelistChanged(uid=" + uid + ", whitelisted="
-                        + whitelisted + ")");
-            }
-        }
-        @Override
-        public void onRestrictBackgroundBlacklistChanged(int uid, boolean blacklisted) {
-            if (LOGD_RULES) {
-                // caller is NPMS, since we only register with them
-                log("onRestrictBackgroundBlacklistChanged(uid=" + uid + ", blacklisted="
-                        + blacklisted + ")");
-            }
+        public void onUidPoliciesChanged(int uid, int uidPolicies) {
         }
     };
 
@@ -1955,14 +1861,7 @@
     @Override
     protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
         final IndentingPrintWriter pw = new IndentingPrintWriter(writer, "  ");
-        if (mContext.checkCallingOrSelfPermission(
-                android.Manifest.permission.DUMP)
-                != PackageManager.PERMISSION_GRANTED) {
-            pw.println("Permission Denial: can't dump ConnectivityService " +
-                    "from from pid=" + Binder.getCallingPid() + ", uid=" +
-                    Binder.getCallingUid());
-            return;
-        }
+        if (!DumpUtils.checkDumpPermission(mContext, TAG, pw)) return;
 
         if (argsContain(args, DIAG_ARG)) {
             dumpNetworkDiagnostics(pw);
@@ -2010,33 +1909,6 @@
         pw.decreaseIndent();
         pw.println();
 
-        pw.println("Metered Interfaces:");
-        pw.increaseIndent();
-        for (String value : mMeteredIfaces) {
-            pw.println(value);
-        }
-        pw.decreaseIndent();
-        pw.println();
-
-        pw.print("Restrict background: ");
-        pw.println(mRestrictBackground);
-        pw.println();
-
-        pw.println("Status for known UIDs:");
-        pw.increaseIndent();
-        final int size = mUidRules.size();
-        for (int i = 0; i < size; i++) {
-            final int uid = mUidRules.keyAt(i);
-            pw.print("UID=");
-            pw.print(uid);
-            final int uidRules = mUidRules.get(uid, RULE_NONE);
-            pw.print(" rules=");
-            pw.print(uidRulesToString(uidRules));
-            pw.println();
-        }
-        pw.println();
-        pw.decreaseIndent();
-
         pw.println("Network Requests:");
         pw.increaseIndent();
         for (NetworkRequestInfo nri : mNetworkRequests.values()) {
@@ -3496,6 +3368,10 @@
         Slog.e(TAG, s);
     }
 
+    private static void loge(String s, Throwable t) {
+        Slog.e(TAG, s, t);
+    }
+
     /**
      * Prepare for a VPN application.
      * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId},
@@ -4238,20 +4114,16 @@
     private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) {
         final int uid = Binder.getCallingUid();
         if (isSystem(uid)) {
+            // Exemption for system uid.
             return;
         }
-        // if UID is restricted, don't allow them to bring up metered APNs
-        if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) {
-            final int uidRules;
-            synchronized(mRulesLock) {
-                uidRules = mUidRules.get(uid, RULE_ALLOW_ALL);
-            }
-            if (mRestrictBackground && (uidRules & RULE_ALLOW_METERED) == 0
-                    && (uidRules & RULE_TEMPORARY_ALLOW_METERED) == 0) {
-                // we could silently fail or we can filter the available nets to only give
-                // them those they have access to.  Chose the more useful option.
-                networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED);
-            }
+        if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED)) {
+            // Policy already enforced.
+            return;
+        }
+        if (mPolicyManagerInternal.isUidRestrictedOnMeteredNetworks(uid)) {
+            // If UID is restricted, don't allow them to bring up metered APNs.
+            networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED);
         }
     }
 
diff --git a/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java b/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java
index 5f9efe7..85d1d1e 100644
--- a/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java
+++ b/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java
@@ -23,6 +23,7 @@
 import android.net.Network;
 import android.net.NetworkUtils;
 import android.net.RouteInfo;
+import android.net.TrafficStats;
 import android.os.SystemClock;
 import android.system.ErrnoException;
 import android.system.Os;
@@ -381,7 +382,12 @@
         protected void setupSocket(
                 int sockType, int protocol, long writeTimeout, long readTimeout, int dstPort)
                 throws ErrnoException, IOException {
-            mFileDescriptor = Os.socket(mAddressFamily, sockType, protocol);
+            final int oldTag = TrafficStats.getAndSetThreadStatsTag(TrafficStats.TAG_SYSTEM_PROBE);
+            try {
+                mFileDescriptor = Os.socket(mAddressFamily, sockType, protocol);
+            } finally {
+                TrafficStats.setThreadStatsTag(oldTag);
+            }
             // Setting SNDTIMEO is purely for defensive purposes.
             Os.setsockoptTimeval(mFileDescriptor,
                     SOL_SOCKET, SO_SNDTIMEO, StructTimeval.fromMillis(writeTimeout));
diff --git a/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java b/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java
index 4ff6657..4315aaa 100644
--- a/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java
+++ b/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java
@@ -31,7 +31,8 @@
 import android.widget.Toast;
 import com.android.internal.R;
 import com.android.internal.annotations.VisibleForTesting;
-import com.android.internal.logging.MetricsProto.MetricsEvent;
+import com.android.internal.messages.nano.SystemMessageProto.SystemMessage;
+import com.android.internal.notification.SystemNotificationChannels;
 
 import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
 import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
@@ -39,11 +40,12 @@
 
 public class NetworkNotificationManager {
 
+
     public static enum NotificationType {
-        LOST_INTERNET(MetricsEvent.NOTIFICATION_NETWORK_LOST_INTERNET),
-        NETWORK_SWITCH(MetricsEvent.NOTIFICATION_NETWORK_SWITCH),
-        NO_INTERNET(MetricsEvent.NOTIFICATION_NETWORK_NO_INTERNET),
-        SIGN_IN(MetricsEvent.NOTIFICATION_NETWORK_SIGN_IN);
+        LOST_INTERNET(SystemMessage.NOTE_NETWORK_LOST_INTERNET),
+        NETWORK_SWITCH(SystemMessage.NOTE_NETWORK_SWITCH),
+        NO_INTERNET(SystemMessage.NOTE_NETWORK_NO_INTERNET),
+        SIGN_IN(SystemMessage.NOTE_NETWORK_SIGN_IN);
 
         public final int eventId;
 
@@ -187,7 +189,9 @@
             return;
         }
 
-        Notification.Builder builder = new Notification.Builder(mContext)
+        final String channelId = highPriority ? SystemNotificationChannels.NETWORK_ALERTS :
+                SystemNotificationChannels.NETWORK_STATUS;
+        Notification.Builder builder = new Notification.Builder(mContext, channelId)
                 .setWhen(System.currentTimeMillis())
                 .setShowWhen(notifyType == NotificationType.NETWORK_SWITCH)
                 .setSmallIcon(icon)
@@ -198,10 +202,6 @@
                 .setContentTitle(title)
                 .setContentIntent(intent)
                 .setLocalOnly(true)
-                .setPriority(highPriority ?
-                        Notification.PRIORITY_HIGH :
-                        Notification.PRIORITY_DEFAULT)
-                .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0)
                 .setOnlyAlertOnce(true);
 
         if (notifyType == NotificationType.NETWORK_SWITCH) {
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index 00b0f98..9c98efa 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -96,6 +96,7 @@
 import com.android.server.connectivity.NetworkMonitor;
 import com.android.server.connectivity.NetworkMonitor.CaptivePortalProbeResult;
 import com.android.server.net.NetworkPinner;
+import com.android.server.net.NetworkPolicyManagerInternal;
 
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
@@ -796,6 +797,9 @@
         }
 
         mServiceContext = new MockContext(getContext());
+        LocalServices.removeServiceForTest(NetworkPolicyManagerInternal.class);
+        LocalServices.addService(
+                NetworkPolicyManagerInternal.class, mock(NetworkPolicyManagerInternal.class));
         mService = new WrappedConnectivityService(mServiceContext,
                 mock(INetworkManagementService.class),
                 mock(INetworkStatsService.class),
diff --git a/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java b/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java
index 8c16dbb..d11565a 100644
--- a/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java
+++ b/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java
@@ -25,7 +25,12 @@
 import static com.android.server.connectivity.MetricsTestUtil.anIntArray;
 import static com.android.server.connectivity.MetricsTestUtil.b;
 import static com.android.server.connectivity.MetricsTestUtil.describeIpEvent;
-import static com.android.server.connectivity.metrics.IpConnectivityLogClass.IpConnectivityLog;
+import static com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.IpConnectivityLog;
+import static com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.BLUETOOTH;
+import static com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.CELLULAR;
+import static com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.ETHERNET;
+import static com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.MULTIPLE;
+import static com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.WIFI;
 
 import android.net.ConnectivityMetricsEvent;
 import android.net.metrics.ApfProgramEvent;
@@ -40,12 +45,144 @@
 import android.net.metrics.RaEvent;
 import android.net.metrics.ValidationProbeEvent;
 import android.test.suitebuilder.annotation.SmallTest;
+import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.IpConnectivityEvent;
 import java.util.Arrays;
+import java.util.List;
 import junit.framework.TestCase;
 
+// TODO: instead of comparing textpb to textpb, parse textpb and compare proto to proto.
 public class IpConnectivityEventBuilderTest extends TestCase {
 
     @SmallTest
+    public void testLinkLayerInferrence() {
+        ConnectivityMetricsEvent ev = describeIpEvent(
+                aType(IpReachabilityEvent.class),
+                anInt(IpReachabilityEvent.NUD_FAILED));
+
+        String want = String.join("\n",
+                "dropped_events: 0",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
+                "  time_ms: 1",
+                "  transports: 0",
+                "  ip_reachability_event <",
+                "    event_type: 512",
+                "    if_name: \"\"",
+                "  >",
+                ">",
+                "version: 2\n");
+        verifySerialization(want, ev);
+
+        ev.netId = 123;
+        ev.transports = 3; // transports have priority for inferrence of link layer
+        ev.ifname = "wlan0";
+        want = String.join("\n",
+                "dropped_events: 0",
+                "events <",
+                "  if_name: \"\"",
+                String.format("  link_layer: %d", MULTIPLE),
+                "  network_id: 123",
+                "  time_ms: 1",
+                "  transports: 3",
+                "  ip_reachability_event <",
+                "    event_type: 512",
+                "    if_name: \"\"",
+                "  >",
+                ">",
+                "version: 2\n");
+        verifySerialization(want, ev);
+
+        ev.transports = 1;
+        ev.ifname = null;
+        want = String.join("\n",
+                "dropped_events: 0",
+                "events <",
+                "  if_name: \"\"",
+                String.format("  link_layer: %d", CELLULAR),
+                "  network_id: 123",
+                "  time_ms: 1",
+                "  transports: 1",
+                "  ip_reachability_event <",
+                "    event_type: 512",
+                "    if_name: \"\"",
+                "  >",
+                ">",
+                "version: 2\n");
+        verifySerialization(want, ev);
+
+        ev.transports = 0;
+        ev.ifname = "not_inferred";
+        want = String.join("\n",
+                "dropped_events: 0",
+                "events <",
+                "  if_name: \"not_inferred\"",
+                "  link_layer: 0",
+                "  network_id: 123",
+                "  time_ms: 1",
+                "  transports: 0",
+                "  ip_reachability_event <",
+                "    event_type: 512",
+                "    if_name: \"\"",
+                "  >",
+                ">",
+                "version: 2\n");
+        verifySerialization(want, ev);
+
+        ev.ifname = "bt-pan";
+        want = String.join("\n",
+                "dropped_events: 0",
+                "events <",
+                "  if_name: \"\"",
+                String.format("  link_layer: %d", BLUETOOTH),
+                "  network_id: 123",
+                "  time_ms: 1",
+                "  transports: 0",
+                "  ip_reachability_event <",
+                "    event_type: 512",
+                "    if_name: \"\"",
+                "  >",
+                ">",
+                "version: 2\n");
+        verifySerialization(want, ev);
+
+        ev.ifname = "rmnet_ipa0";
+        want = String.join("\n",
+                "dropped_events: 0",
+                "events <",
+                "  if_name: \"\"",
+                String.format("  link_layer: %d", CELLULAR),
+                "  network_id: 123",
+                "  time_ms: 1",
+                "  transports: 0",
+                "  ip_reachability_event <",
+                "    event_type: 512",
+                "    if_name: \"\"",
+                "  >",
+                ">",
+                "version: 2\n");
+        verifySerialization(want, ev);
+
+        ev.ifname = "wlan0";
+        want = String.join("\n",
+                "dropped_events: 0",
+                "events <",
+                "  if_name: \"\"",
+                String.format("  link_layer: %d", WIFI),
+                "  network_id: 123",
+                "  time_ms: 1",
+                "  transports: 0",
+                "  ip_reachability_event <",
+                "    event_type: 512",
+                "    if_name: \"\"",
+                "  >",
+                ">",
+                "version: 2\n");
+        verifySerialization(want, ev);
+    }
+
+    @SmallTest
     public void testDefaultNetworkEventSerialization() {
         ConnectivityMetricsEvent ev = describeIpEvent(
                 aType(DefaultNetworkEvent.class),
@@ -55,9 +192,14 @@
                 aBool(true),
                 aBool(false));
 
-        String want = joinLines(
+        String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
+                "  time_ms: 1",
+                "  transports: 0",
                 "  default_network_event <",
                 "    network_id <",
                 "      network_id: 102",
@@ -70,10 +212,8 @@
                 "    transport_types: 2",
                 "    transport_types: 3",
                 "  >",
-                "  time_ms: 1",
-                "  transport: 0",
                 ">",
-                "version: 2");
+                "version: 2\n");
 
         verifySerialization(want, ev);
     }
@@ -82,23 +222,24 @@
     public void testDhcpClientEventSerialization() {
         ConnectivityMetricsEvent ev = describeIpEvent(
                 aType(DhcpClientEvent.class),
-                aString("wlan0"),
                 aString("SomeState"),
                 anInt(192));
 
-        String want = joinLines(
+        String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
+                "  time_ms: 1",
+                "  transports: 0",
                 "  dhcp_event <",
                 "    duration_ms: 192",
-                "    error_code: 0",
-                "    if_name: \"wlan0\"",
+                "    if_name: \"\"",
                 "    state_transition: \"SomeState\"",
                 "  >",
-                "  time_ms: 1",
-                "  transport: 0",
                 ">",
-                "version: 2");
+                "version: 2\n");
 
         verifySerialization(want, ev);
     }
@@ -107,71 +248,23 @@
     public void testDhcpErrorEventSerialization() {
         ConnectivityMetricsEvent ev = describeIpEvent(
                 aType(DhcpErrorEvent.class),
-                aString("wlan0"),
                 anInt(DhcpErrorEvent.L4_NOT_UDP));
 
-        String want = joinLines(
+        String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
+                "  time_ms: 1",
+                "  transports: 0",
                 "  dhcp_event <",
                 "    duration_ms: 0",
+                "    if_name: \"\"",
                 "    error_code: 50397184",
-                "    if_name: \"wlan0\"",
-                "    state_transition: \"\"",
                 "  >",
-                "  time_ms: 1",
-                "  transport: 0",
                 ">",
-                "version: 2");
-
-        verifySerialization(want, ev);
-    }
-
-    @SmallTest
-    public void testDnsEventSerialization() {
-        ConnectivityMetricsEvent ev = describeIpEvent(
-                aType(DnsEvent.class),
-                anInt(101),
-                aByteArray(b(1), b(1), b(2), b(1), b(1), b(1), b(2), b(2)),
-                aByteArray(b(0), b(0), b(22), b(3), b(1), b(0), b(200), b(178)),
-                anIntArray(3456, 267, 1230, 45, 2111, 450, 638, 1300));
-
-        String want = joinLines(
-                "dropped_events: 0",
-                "events <",
-                "  dns_lookup_batch <",
-                "    event_types: 1",
-                "    event_types: 1",
-                "    event_types: 2",
-                "    event_types: 1",
-                "    event_types: 1",
-                "    event_types: 1",
-                "    event_types: 2",
-                "    event_types: 2",
-                "    latencies_ms: 3456",
-                "    latencies_ms: 267",
-                "    latencies_ms: 1230",
-                "    latencies_ms: 45",
-                "    latencies_ms: 2111",
-                "    latencies_ms: 450",
-                "    latencies_ms: 638",
-                "    latencies_ms: 1300",
-                "    network_id <",
-                "      network_id: 101",
-                "    >",
-                "    return_codes: 0",
-                "    return_codes: 0",
-                "    return_codes: 22",
-                "    return_codes: 3",
-                "    return_codes: 1",
-                "    return_codes: 0",
-                "    return_codes: 200",
-                "    return_codes: 178",
-                "  >",
-                "  time_ms: 1",
-                "  transport: 0",
-                ">",
-                "version: 2");
+                "version: 2\n");
 
         verifySerialization(want, ev);
     }
@@ -180,22 +273,24 @@
     public void testIpManagerEventSerialization() {
         ConnectivityMetricsEvent ev = describeIpEvent(
                 aType(IpManagerEvent.class),
-                aString("wlan0"),
                 anInt(IpManagerEvent.PROVISIONING_OK),
                 aLong(5678));
 
-        String want = joinLines(
+        String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
+                "  time_ms: 1",
+                "  transports: 0",
                 "  ip_provisioning_event <",
                 "    event_type: 1",
-                "    if_name: \"wlan0\"",
+                "    if_name: \"\"",
                 "    latency_ms: 5678",
                 "  >",
-                "  time_ms: 1",
-                "  transport: 0",
                 ">",
-                "version: 2");
+                "version: 2\n");
 
         verifySerialization(want, ev);
     }
@@ -204,20 +299,22 @@
     public void testIpReachabilityEventSerialization() {
         ConnectivityMetricsEvent ev = describeIpEvent(
                 aType(IpReachabilityEvent.class),
-                aString("wlan0"),
                 anInt(IpReachabilityEvent.NUD_FAILED));
 
-        String want = joinLines(
+        String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
+                "  time_ms: 1",
+                "  transports: 0",
                 "  ip_reachability_event <",
                 "    event_type: 512",
-                "    if_name: \"wlan0\"",
+                "    if_name: \"\"",
                 "  >",
-                "  time_ms: 1",
-                "  transport: 0",
                 ">",
-                "version: 2");
+                "version: 2\n");
 
         verifySerialization(want, ev);
     }
@@ -230,9 +327,14 @@
                 anInt(5),
                 aLong(20410));
 
-        String want = joinLines(
+        String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
+                "  time_ms: 1",
+                "  transports: 0",
                 "  network_event <",
                 "    event_type: 5",
                 "    latency_ms: 20410",
@@ -240,10 +342,8 @@
                 "      network_id: 100",
                 "    >",
                 "  >",
-                "  time_ms: 1",
-                "  transport: 0",
                 ">",
-                "version: 2");
+                "version: 2\n");
 
         verifySerialization(want, ev);
     }
@@ -252,26 +352,25 @@
     public void testValidationProbeEventSerialization() {
         ConnectivityMetricsEvent ev = describeIpEvent(
                 aType(ValidationProbeEvent.class),
-                anInt(120),
                 aLong(40730),
                 anInt(ValidationProbeEvent.PROBE_HTTP),
                 anInt(204));
 
-        String want = joinLines(
+        String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
                 "  time_ms: 1",
-                "  transport: 0",
+                "  transports: 0",
                 "  validation_probe_event <",
                 "    latency_ms: 40730",
-                "    network_id <",
-                "      network_id: 120",
-                "    >",
                 "    probe_result: 204",
                 "    probe_type: 1",
                 "  >",
                 ">",
-                "version: 2");
+                "version: 2\n");
 
         verifySerialization(want, ev);
     }
@@ -281,26 +380,31 @@
         ConnectivityMetricsEvent ev = describeIpEvent(
                 aType(ApfProgramEvent.class),
                 aLong(200),
+                aLong(18),
                 anInt(7),
                 anInt(9),
                 anInt(2048),
                 anInt(3));
 
-        String want = joinLines(
+        String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
+                "  time_ms: 1",
+                "  transports: 0",
                 "  apf_program_event <",
                 "    current_ras: 9",
                 "    drop_multicast: true",
+                "    effective_lifetime: 18",
                 "    filtered_ras: 7",
                 "    has_ipv4_addr: true",
                 "    lifetime: 200",
                 "    program_length: 2048",
                 "  >",
-                "  time_ms: 1",
-                "  transport: 0",
                 ">",
-                "version: 2");
+                "version: 2\n");
 
         verifySerialization(want, ev);
     }
@@ -316,11 +420,18 @@
                 anInt(1),
                 anInt(2),
                 anInt(4),
+                anInt(7),
+                anInt(3),
                 anInt(2048));
 
-        String want = joinLines(
+        String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
+                "  time_ms: 1",
+                "  transports: 0",
                 "  apf_statistics <",
                 "    dropped_ras: 2",
                 "    duration_ms: 45000",
@@ -328,13 +439,13 @@
                 "    max_program_size: 2048",
                 "    parse_errors: 2",
                 "    program_updates: 4",
+                "    program_updates_all: 7",
+                "    program_updates_allowing_multicast: 3",
                 "    received_ras: 10",
                 "    zero_lifetime_ras: 1",
                 "  >",
-                "  time_ms: 1",
-                "  transport: 0",
                 ">",
-                "version: 2");
+                "version: 2\n");
 
         verifySerialization(want, ev);
     }
@@ -350,9 +461,14 @@
                 aLong(1000),
                 aLong(-1));
 
-        String want = joinLines(
+        String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
+                "  time_ms: 1",
+                "  transports: 0",
                 "  ra_event <",
                 "    dnssl_lifetime: -1",
                 "    prefix_preferred_lifetime: 300",
@@ -361,31 +477,21 @@
                 "    route_info_lifetime: -1",
                 "    router_lifetime: 2000",
                 "  >",
-                "  time_ms: 1",
-                "  transport: 0",
                 ">",
-                "version: 2");
+                "version: 2\n");
 
         verifySerialization(want, ev);
     }
 
     static void verifySerialization(String want, ConnectivityMetricsEvent... input) {
         try {
-            byte[] got = IpConnectivityEventBuilder.serialize(0,
-                    IpConnectivityEventBuilder.toProto(Arrays.asList(input)));
+            List<IpConnectivityEvent> proto =
+                    IpConnectivityEventBuilder.toProto(Arrays.asList(input));
+            byte[] got = IpConnectivityEventBuilder.serialize(0, proto);
             IpConnectivityLog log = IpConnectivityLog.parseFrom(got);
             assertEquals(want, log.toString());
         } catch (Exception e) {
             fail(e.toString());
         }
     }
-
-    static String joinLines(String ... elems) {
-        StringBuilder b = new StringBuilder();
-        for (String s : elems) {
-            b.append(s);
-            b.append("\n");
-        }
-        return b.toString();
-    }
 }
diff --git a/tests/net/java/com/android/server/connectivity/IpConnectivityMetricsTest.java b/tests/net/java/com/android/server/connectivity/IpConnectivityMetricsTest.java
index 9a33cde..e01469b 100644
--- a/tests/net/java/com/android/server/connectivity/IpConnectivityMetricsTest.java
+++ b/tests/net/java/com/android/server/connectivity/IpConnectivityMetricsTest.java
@@ -16,12 +16,22 @@
 
 package com.android.server.connectivity;
 
+import static android.net.metrics.INetdEventListener.EVENT_GETADDRINFO;
+import static android.net.metrics.INetdEventListener.EVENT_GETHOSTBYNAME;
 import static org.mockito.Mockito.timeout;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 import android.content.Context;
+import android.net.ConnectivityManager;
 import android.net.ConnectivityMetricsEvent;
 import android.net.IIpConnectivityMetrics;
+import android.net.Network;
+import android.net.NetworkCapabilities;
 import android.net.metrics.ApfProgramEvent;
 import android.net.metrics.ApfStats;
 import android.net.metrics.DefaultNetworkEvent;
@@ -31,36 +41,50 @@
 import android.net.metrics.IpReachabilityEvent;
 import android.net.metrics.RaEvent;
 import android.net.metrics.ValidationProbeEvent;
+import android.system.OsConstants;
 import android.os.Parcelable;
+import android.support.test.runner.AndroidJUnit4;
 import android.test.suitebuilder.annotation.SmallTest;
 import android.util.Base64;
-import com.android.server.connectivity.metrics.IpConnectivityLogClass;
+import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass;
 import java.io.PrintWriter;
 import java.io.StringWriter;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.Iterator;
 import java.util.List;
-import junit.framework.TestCase;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
 
-public class IpConnectivityMetricsTest extends TestCase {
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class IpConnectivityMetricsTest {
     static final IpReachabilityEvent FAKE_EV =
-            new IpReachabilityEvent("wlan0", IpReachabilityEvent.NUD_FAILED);
+            new IpReachabilityEvent(IpReachabilityEvent.NUD_FAILED);
+
+    private static final String EXAMPLE_IPV4 = "192.0.2.1";
+    private static final String EXAMPLE_IPV6 = "2001:db8:1200::2:1";
 
     @Mock Context mCtx;
     @Mock IIpConnectivityMetrics mMockService;
+    @Mock ConnectivityManager mCm;
 
     IpConnectivityMetrics mService;
+    NetdEventListenerService mNetdListener;
 
+    @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
         mService = new IpConnectivityMetrics(mCtx, (ctx) -> 2000);
+        mNetdListener = new NetdEventListenerService(mCm);
+        mService.mNetdListener = mNetdListener;
     }
 
-    @SmallTest
+    @Test
     public void testLoggingEvents() throws Exception {
         IpConnectivityLog logger = new IpConnectivityLog(mMockService);
 
@@ -74,7 +98,7 @@
         assertEventsEqual(expectedEvent(3), got.get(2));
     }
 
-    @SmallTest
+    @Test
     public void testLoggingEventsWithMultipleCallers() throws Exception {
         IpConnectivityLog logger = new IpConnectivityLog(mMockService);
 
@@ -85,24 +109,24 @@
             new Thread() {
                 public void run() {
                     for (int j = 0; j < nEvents; j++) {
-                        assertTrue(logger.log(i * 100 + j, FAKE_EV));
+                        assertTrue(logger.log(1 + i * 100 + j, FAKE_EV));
                     }
                 }
             }.start();
         }
 
-        List<ConnectivityMetricsEvent> got = verifyEvents(nCallers * nEvents, 100);
+        List<ConnectivityMetricsEvent> got = verifyEvents(nCallers * nEvents, 200);
         Collections.sort(got, EVENT_COMPARATOR);
         Iterator<ConnectivityMetricsEvent> iter = got.iterator();
         for (int i = 0; i < nCallers; i++) {
             for (int j = 0; j < nEvents; j++) {
-                int expectedTimestamp = i * 100 + j;
+                int expectedTimestamp = 1 + i * 100 + j;
                 assertEventsEqual(expectedEvent(expectedTimestamp), iter.next());
             }
         }
     }
 
-    @SmallTest
+    @Test
     public void testBufferFlushing() {
         String output1 = getdump("flush");
         assertEquals("", output1);
@@ -115,10 +139,10 @@
         assertEquals("", output3);
     }
 
-    @SmallTest
+    @Test
     public void testRateLimiting() {
         final IpConnectivityLog logger = new IpConnectivityLog(mService.impl);
-        final ApfProgramEvent ev = new ApfProgramEvent(0, 0, 0, 0, 0);
+        final ApfProgramEvent ev = new ApfProgramEvent();
         final long fakeTimestamp = 1;
 
         int attempt = 100; // More than burst quota, but less than buffer size.
@@ -137,45 +161,100 @@
         assertEquals("", output2);
     }
 
-    @SmallTest
-    public void testEndToEndLogging() {
+    @Test
+    public void testEndToEndLogging() throws Exception {
+        // TODO: instead of comparing textpb to textpb, parse textpb and compare proto to proto.
         IpConnectivityLog logger = new IpConnectivityLog(mService.impl);
 
+        NetworkCapabilities ncWifi = new NetworkCapabilities();
+        NetworkCapabilities ncCell = new NetworkCapabilities();
+        ncWifi.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
+        ncCell.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR);
+
+        when(mCm.getNetworkCapabilities(new Network(100))).thenReturn(ncWifi);
+        when(mCm.getNetworkCapabilities(new Network(101))).thenReturn(ncCell);
+
+        ApfStats apfStats = new ApfStats();
+        apfStats.durationMs = 45000;
+        apfStats.receivedRas = 10;
+        apfStats.matchingRas = 2;
+        apfStats.droppedRas = 2;
+        apfStats.parseErrors = 2;
+        apfStats.zeroLifetimeRas = 1;
+        apfStats.programUpdates = 4;
+        apfStats.programUpdatesAll = 7;
+        apfStats.programUpdatesAllowingMulticast = 3;
+        apfStats.maxProgramSize = 2048;
+
+        ValidationProbeEvent validationEv = new ValidationProbeEvent();
+        validationEv.durationMs = 40730;
+        validationEv.probeType = ValidationProbeEvent.PROBE_HTTP;
+        validationEv.returnCode = 204;
+
         Parcelable[] events = {
-            new IpReachabilityEvent("wlan0", IpReachabilityEvent.NUD_FAILED),
-            new DhcpClientEvent("wlan0", "SomeState", 192),
+            new IpReachabilityEvent(IpReachabilityEvent.NUD_FAILED),
+            new DhcpClientEvent("SomeState", 192),
             new DefaultNetworkEvent(102, new int[]{1,2,3}, 101, true, false),
-            new IpManagerEvent("wlan0", IpManagerEvent.PROVISIONING_OK, 5678),
-            new ValidationProbeEvent(120, 40730, ValidationProbeEvent.PROBE_HTTP, 204),
-            new ApfStats(45000, 10, 2, 2, 1, 2, 4, 2048),
+            new IpManagerEvent(IpManagerEvent.PROVISIONING_OK, 5678),
+            validationEv,
+            apfStats,
             new RaEvent(2000, 400, 300, -1, 1000, -1)
         };
 
         for (int i = 0; i < events.length; i++) {
-            logger.log(100 * (i + 1), events[i]);
+            ConnectivityMetricsEvent ev = new ConnectivityMetricsEvent();
+            ev.timestamp = 100 * (i + 1);
+            ev.ifname = "wlan0";
+            ev.data = events[i];
+            logger.log(ev);
         }
 
-        String want = joinLines(
+        // netId, errno, latency, destination
+        connectEvent(100, OsConstants.EALREADY, 0, EXAMPLE_IPV4);
+        connectEvent(100, OsConstants.EINPROGRESS, 0, EXAMPLE_IPV6);
+        connectEvent(100, 0, 110, EXAMPLE_IPV4);
+        connectEvent(101, 0, 23, EXAMPLE_IPV4);
+        connectEvent(101, 0, 45, EXAMPLE_IPV6);
+        connectEvent(100, OsConstants.EAGAIN, 0, EXAMPLE_IPV4);
+
+        // netId, type, return code, latency
+        dnsEvent(100, EVENT_GETADDRINFO, 0, 3456);
+        dnsEvent(100, EVENT_GETADDRINFO, 3, 45);
+        dnsEvent(100, EVENT_GETHOSTBYNAME, 0, 638);
+        dnsEvent(101, EVENT_GETADDRINFO, 0, 56);
+        dnsEvent(101, EVENT_GETHOSTBYNAME, 0, 34);
+
+        String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 4",
+                "  network_id: 0",
+                "  time_ms: 100",
+                "  transports: 0",
                 "  ip_reachability_event <",
                 "    event_type: 512",
-                "    if_name: \"wlan0\"",
+                "    if_name: \"\"",
                 "  >",
-                "  time_ms: 100",
-                "  transport: 0",
                 ">",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 4",
+                "  network_id: 0",
+                "  time_ms: 200",
+                "  transports: 0",
                 "  dhcp_event <",
                 "    duration_ms: 192",
-                "    error_code: 0",
-                "    if_name: \"wlan0\"",
+                "    if_name: \"\"",
                 "    state_transition: \"SomeState\"",
                 "  >",
-                "  time_ms: 200",
-                "  transport: 0",
                 ">",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 4",
+                "  network_id: 0",
+                "  time_ms: 300",
+                "  transports: 0",
                 "  default_network_event <",
                 "    network_id <",
                 "      network_id: 102",
@@ -188,31 +267,37 @@
                 "    transport_types: 2",
                 "    transport_types: 3",
                 "  >",
-                "  time_ms: 300",
-                "  transport: 0",
                 ">",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 4",
+                "  network_id: 0",
+                "  time_ms: 400",
+                "  transports: 0",
                 "  ip_provisioning_event <",
                 "    event_type: 1",
-                "    if_name: \"wlan0\"",
+                "    if_name: \"\"",
                 "    latency_ms: 5678",
                 "  >",
-                "  time_ms: 400",
-                "  transport: 0",
                 ">",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 4",
+                "  network_id: 0",
                 "  time_ms: 500",
-                "  transport: 0",
+                "  transports: 0",
                 "  validation_probe_event <",
                 "    latency_ms: 40730",
-                "    network_id <",
-                "      network_id: 120",
-                "    >",
                 "    probe_result: 204",
                 "    probe_type: 1",
                 "  >",
                 ">",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 4",
+                "  network_id: 0",
+                "  time_ms: 600",
+                "  transports: 0",
                 "  apf_statistics <",
                 "    dropped_ras: 2",
                 "    duration_ms: 45000",
@@ -220,13 +305,18 @@
                 "    max_program_size: 2048",
                 "    parse_errors: 2",
                 "    program_updates: 4",
+                "    program_updates_all: 7",
+                "    program_updates_allowing_multicast: 3",
                 "    received_ras: 10",
                 "    zero_lifetime_ras: 1",
                 "  >",
-                "  time_ms: 600",
-                "  transport: 0",
                 ">",
                 "events <",
+                "  if_name: \"\"",
+                "  link_layer: 4",
+                "  network_id: 0",
+                "  time_ms: 700",
+                "  transports: 0",
                 "  ra_event <",
                 "    dnssl_lifetime: -1",
                 "    prefix_preferred_lifetime: 300",
@@ -235,10 +325,72 @@
                 "    route_info_lifetime: -1",
                 "    router_lifetime: 2000",
                 "  >",
-                "  time_ms: 700",
-                "  transport: 0",
                 ">",
-                "version: 2");
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 4",
+                "  network_id: 100",
+                "  time_ms: 0",
+                "  transports: 2",
+                "  connect_statistics <",
+                "    connect_blocking_count: 1",
+                "    connect_count: 3",
+                "    errnos_counters <",
+                "      key: 11",
+                "      value: 1",
+                "    >",
+                "    ipv6_addr_count: 1",
+                "    latencies_ms: 110",
+                "  >",
+                ">",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 2",
+                "  network_id: 101",
+                "  time_ms: 0",
+                "  transports: 1",
+                "  connect_statistics <",
+                "    connect_blocking_count: 2",
+                "    connect_count: 2",
+                "    ipv6_addr_count: 1",
+                "    latencies_ms: 23",
+                "    latencies_ms: 45",
+                "  >",
+                ">",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 4",
+                "  network_id: 100",
+                "  time_ms: 0",
+                "  transports: 2",
+                "  dns_lookup_batch <",
+                "    event_types: 1",
+                "    event_types: 1",
+                "    event_types: 2",
+                "    latencies_ms: 3456",
+                "    latencies_ms: 45",
+                "    latencies_ms: 638",
+                "    return_codes: 0",
+                "    return_codes: 3",
+                "    return_codes: 0",
+                "  >",
+                ">",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 2",
+                "  network_id: 101",
+                "  time_ms: 0",
+                "  transports: 1",
+                "  dns_lookup_batch <",
+                "    event_types: 1",
+                "    event_types: 2",
+                "    latencies_ms: 56",
+                "    latencies_ms: 34",
+                "    return_codes: 0",
+                "    return_codes: 0",
+                "  >",
+                ">",
+                "version: 2\n");
 
         verifySerialization(want, getdump("flush"));
     }
@@ -250,6 +402,14 @@
         return buffer.toString();
     }
 
+    void connectEvent(int netid, int error, int latencyMs, String ipAddr) throws Exception {
+        mNetdListener.onConnectEvent(netid, error, latencyMs, ipAddr, 80, 1);
+    }
+
+    void dnsEvent(int netId, int type, int result, int latency) throws Exception {
+        mNetdListener.onDnsEvent(netId, type, result, latency, "", null, 0, 0);
+    }
+
     List<ConnectivityMetricsEvent> verifyEvents(int n, int timeoutMs) throws Exception {
         ArgumentCaptor<ConnectivityMetricsEvent> captor =
                 ArgumentCaptor.forClass(ConnectivityMetricsEvent.class);
@@ -281,14 +441,15 @@
     }
 
     static ConnectivityMetricsEvent expectedEvent(int timestamp) {
-        return new ConnectivityMetricsEvent((long)timestamp, 0, 0, FAKE_EV);
+        ConnectivityMetricsEvent ev = new ConnectivityMetricsEvent();
+        ev.timestamp = timestamp;
+        ev.data = FAKE_EV;
+        return ev;
     }
 
     /** Outer equality for ConnectivityMetricsEvent to avoid overriding equals() and hashCode(). */
     static void assertEventsEqual(ConnectivityMetricsEvent expected, ConnectivityMetricsEvent got) {
         assertEquals(expected.timestamp, got.timestamp);
-        assertEquals(expected.componentTag, got.componentTag);
-        assertEquals(expected.eventTag, got.eventTag);
         assertEquals(expected.data, got.data);
     }
 
diff --git a/tests/net/java/com/android/server/connectivity/MetricsTestUtil.java b/tests/net/java/com/android/server/connectivity/MetricsTestUtil.java
index e201012..5064b9b 100644
--- a/tests/net/java/com/android/server/connectivity/MetricsTestUtil.java
+++ b/tests/net/java/com/android/server/connectivity/MetricsTestUtil.java
@@ -17,101 +17,62 @@
 package com.android.server.connectivity;
 
 import android.net.ConnectivityMetricsEvent;
-import android.net.ConnectivityMetricsLogger;
 import android.os.Bundle;
 import android.os.Parcel;
 import android.os.Parcelable;
 
+import java.util.function.Consumer;
+
 abstract public class MetricsTestUtil {
     private MetricsTestUtil() {
     }
 
-    static ConnectivityMetricsEvent ipEv(Parcelable p) {
-        return ev(ConnectivityMetricsLogger.COMPONENT_TAG_CONNECTIVITY, p);
+    static ConnectivityMetricsEvent ev(Parcelable p) {
+        ConnectivityMetricsEvent ev = new ConnectivityMetricsEvent();
+        ev.timestamp = 1L;
+        ev.data = p;
+        return ev;
     }
 
-    static ConnectivityMetricsEvent telephonyEv() {
-        return ev(ConnectivityMetricsLogger.COMPONENT_TAG_TELEPHONY, new Bundle());
-    }
-
-    static ConnectivityMetricsEvent ev(int tag, Parcelable p) {
-        return new ConnectivityMetricsEvent(1L, tag, 0, p);
-    }
-
-    // Utiliy interface for describing the content of a Parcel. This relies on
-    // the implementation defails of Parcelable and on the fact that the fully
-    // qualified Parcelable class names are written as string in the Parcels.
-    interface ParcelField {
-        void write(Parcel p);
-    }
-
-    static ConnectivityMetricsEvent describeIpEvent(ParcelField... fs) {
+    static ConnectivityMetricsEvent describeIpEvent(Consumer<Parcel>... fs) {
         Parcel p = Parcel.obtain();
-        for (ParcelField f : fs) {
-            f.write(p);
+        for (Consumer<Parcel> f : fs) {
+            f.accept(p);
         }
         p.setDataPosition(0);
-        return ipEv(p.readParcelable(ClassLoader.getSystemClassLoader()));
+        return ev(p.readParcelable(ClassLoader.getSystemClassLoader()));
     }
 
-    static ParcelField aType(Class<?> c) {
-        return new ParcelField() {
-            public void write(Parcel p) {
-                p.writeString(c.getName());
-            }
-        };
+    static Consumer<Parcel> aType(Class<?> c) {
+        return aString(c.getName());
     }
 
-    static ParcelField aBool(boolean b) {
+    static Consumer<Parcel> aBool(boolean b) {
         return aByte((byte) (b ? 1 : 0));
     }
 
-    static ParcelField aByte(byte b) {
-        return new ParcelField() {
-            public void write(Parcel p) {
-                p.writeByte(b);
-            }
-        };
+    static Consumer<Parcel> aByte(byte b) {
+        return (p) -> p.writeByte(b);
     }
 
-    static ParcelField anInt(int i) {
-        return new ParcelField() {
-            public void write(Parcel p) {
-                p.writeInt(i);
-            }
-        };
+    static Consumer<Parcel> anInt(int i) {
+        return (p) -> p.writeInt(i);
     }
 
-    static ParcelField aLong(long l) {
-        return new ParcelField() {
-            public void write(Parcel p) {
-                p.writeLong(l);
-            }
-        };
+    static Consumer<Parcel> aLong(long l) {
+        return (p) -> p.writeLong(l);
     }
 
-    static ParcelField aString(String s) {
-        return new ParcelField() {
-            public void write(Parcel p) {
-                p.writeString(s);
-            }
-        };
+    static Consumer<Parcel> aString(String s) {
+        return (p) -> p.writeString(s);
     }
 
-    static ParcelField aByteArray(byte... ary) {
-        return new ParcelField() {
-            public void write(Parcel p) {
-                p.writeByteArray(ary);
-            }
-        };
+    static Consumer<Parcel> aByteArray(byte... ary) {
+        return (p) -> p.writeByteArray(ary);
     }
 
-    static ParcelField anIntArray(int... ary) {
-        return new ParcelField() {
-            public void write(Parcel p) {
-                p.writeIntArray(ary);
-            }
-        };
+    static Consumer<Parcel> anIntArray(int... ary) {
+        return (p) -> p.writeIntArray(ary);
     }
 
     static byte b(int i) {
diff --git a/tests/net/java/com/android/server/connectivity/NetdEventListenerServiceTest.java b/tests/net/java/com/android/server/connectivity/NetdEventListenerServiceTest.java
index 6c8babb..f98ab3d 100644
--- a/tests/net/java/com/android/server/connectivity/NetdEventListenerServiceTest.java
+++ b/tests/net/java/com/android/server/connectivity/NetdEventListenerServiceTest.java
@@ -16,188 +16,182 @@
 
 package com.android.server.connectivity;
 
-import android.net.ConnectivityManager;
-import android.net.ConnectivityManager.NetworkCallback;
-import android.net.Network;
-import android.net.metrics.DnsEvent;
-import android.net.metrics.INetdEventListener;
-import android.net.metrics.IpConnectivityLog;
-import android.os.RemoteException;
-import android.system.OsConstants;
-import android.test.suitebuilder.annotation.SmallTest;
-import com.android.server.connectivity.metrics.IpConnectivityLogClass.IpConnectivityEvent;
-import java.io.FileOutputStream;
-import java.io.PrintWriter;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Comparator;
-import java.util.List;
-import java.util.OptionalInt;
-import java.util.stream.IntStream;
-import junit.framework.TestCase;
-import org.junit.Before;
-import org.junit.Test;
-import org.mockito.ArgumentCaptor;
-import org.mockito.Mock;
-import org.mockito.Mockito;
-import org.mockito.MockitoAnnotations;
-
-import static org.junit.Assert.assertArrayEquals;
-import static org.junit.Assert.assertTrue;
+import static android.net.metrics.INetdEventListener.EVENT_GETADDRINFO;
+import static android.net.metrics.INetdEventListener.EVENT_GETHOSTBYNAME;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
 import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.anyInt;
 import static org.mockito.Mockito.eq;
 import static org.mockito.Mockito.timeout;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
 
-public class NetdEventListenerServiceTest extends TestCase {
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.Network;
+import android.net.NetworkCapabilities;
+import android.support.test.runner.AndroidJUnit4;
+import android.system.OsConstants;
+import android.test.suitebuilder.annotation.SmallTest;
+import android.util.Base64;
+import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.DNSLookupBatch;
+import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.IpConnectivityEvent;
+import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.IpConnectivityLog;
+import java.io.FileOutputStream;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.List;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
 
-    // TODO: read from NetdEventListenerService after this constant is read from system property
-    static final int BATCH_SIZE = 100;
-    static final int EVENT_TYPE = INetdEventListener.EVENT_GETADDRINFO;
-    // TODO: read from INetdEventListener
-    static final int RETURN_CODE = 1;
-
-    static final byte[] EVENT_TYPES  = new byte[BATCH_SIZE];
-    static final byte[] RETURN_CODES = new byte[BATCH_SIZE];
-    static final int[] LATENCIES     = new int[BATCH_SIZE];
-    static {
-        for (int i = 0; i < BATCH_SIZE; i++) {
-            EVENT_TYPES[i] = EVENT_TYPE;
-            RETURN_CODES[i] = RETURN_CODE;
-            LATENCIES[i] = i;
-        }
-    }
-
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class NetdEventListenerServiceTest {
     private static final String EXAMPLE_IPV4 = "192.0.2.1";
     private static final String EXAMPLE_IPV6 = "2001:db8:1200::2:1";
 
     NetdEventListenerService mNetdEventListenerService;
+    ConnectivityManager mCm;
 
-    @Mock ConnectivityManager mCm;
-    @Mock IpConnectivityLog mLog;
-    ArgumentCaptor<NetworkCallback> mCallbackCaptor;
-    ArgumentCaptor<DnsEvent> mDnsEvCaptor;
-
+    @Before
     public void setUp() {
-        MockitoAnnotations.initMocks(this);
-        mCallbackCaptor = ArgumentCaptor.forClass(NetworkCallback.class);
-        mDnsEvCaptor = ArgumentCaptor.forClass(DnsEvent.class);
-        mNetdEventListenerService = new NetdEventListenerService(mCm, mLog);
+        NetworkCapabilities ncWifi = new NetworkCapabilities();
+        NetworkCapabilities ncCell = new NetworkCapabilities();
+        ncWifi.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
+        ncCell.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR);
 
-        verify(mCm, times(1)).registerNetworkCallback(any(), mCallbackCaptor.capture());
+        mCm = mock(ConnectivityManager.class);
+        when(mCm.getNetworkCapabilities(new Network(100))).thenReturn(ncWifi);
+        when(mCm.getNetworkCapabilities(new Network(101))).thenReturn(ncCell);
+
+        mNetdEventListenerService = new NetdEventListenerService(mCm);
     }
 
-    @SmallTest
-    public void testOneDnsBatch() throws Exception {
-        log(105, LATENCIES);
-        log(106, Arrays.copyOf(LATENCIES, BATCH_SIZE - 1)); // one lookup short of a batch event
+    @Test
+    public void testDnsLogging() throws Exception {
+        asyncDump(100);
 
-        verifyLoggedDnsEvents(new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES));
+        dnsEvent(100, EVENT_GETADDRINFO, 0, 3456);
+        dnsEvent(100, EVENT_GETADDRINFO, 0, 267);
+        dnsEvent(100, EVENT_GETHOSTBYNAME, 22, 1230);
+        dnsEvent(100, EVENT_GETADDRINFO, 3, 45);
+        dnsEvent(100, EVENT_GETADDRINFO, 1, 2111);
+        dnsEvent(100, EVENT_GETADDRINFO, 0, 450);
+        dnsEvent(100, EVENT_GETHOSTBYNAME, 200, 638);
+        dnsEvent(100, EVENT_GETHOSTBYNAME, 178, 1300);
+        dnsEvent(101, EVENT_GETADDRINFO, 0, 56);
+        dnsEvent(101, EVENT_GETADDRINFO, 0, 78);
+        dnsEvent(101, EVENT_GETADDRINFO, 0, 14);
+        dnsEvent(101, EVENT_GETHOSTBYNAME, 0, 56);
+        dnsEvent(101, EVENT_GETADDRINFO, 0, 78);
+        dnsEvent(101, EVENT_GETADDRINFO, 0, 14);
 
-        log(106, Arrays.copyOfRange(LATENCIES, BATCH_SIZE - 1, BATCH_SIZE));
-
-        mDnsEvCaptor = ArgumentCaptor.forClass(DnsEvent.class); // reset argument captor
-        verifyLoggedDnsEvents(
-            new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES),
-            new DnsEvent(106, EVENT_TYPES, RETURN_CODES, LATENCIES));
+        String got = flushStatistics();
+        String want = String.join("\n",
+                "dropped_events: 0",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 4",
+                "  network_id: 100",
+                "  time_ms: 0",
+                "  transports: 2",
+                "  dns_lookup_batch <",
+                "    event_types: 1",
+                "    event_types: 1",
+                "    event_types: 2",
+                "    event_types: 1",
+                "    event_types: 1",
+                "    event_types: 1",
+                "    event_types: 2",
+                "    event_types: 2",
+                "    latencies_ms: 3456",
+                "    latencies_ms: 267",
+                "    latencies_ms: 1230",
+                "    latencies_ms: 45",
+                "    latencies_ms: 2111",
+                "    latencies_ms: 450",
+                "    latencies_ms: 638",
+                "    latencies_ms: 1300",
+                "    return_codes: 0",
+                "    return_codes: 0",
+                "    return_codes: 22",
+                "    return_codes: 3",
+                "    return_codes: 1",
+                "    return_codes: 0",
+                "    return_codes: 200",
+                "    return_codes: 178",
+                "  >",
+                ">",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 2",
+                "  network_id: 101",
+                "  time_ms: 0",
+                "  transports: 1",
+                "  dns_lookup_batch <",
+                "    event_types: 1",
+                "    event_types: 1",
+                "    event_types: 1",
+                "    event_types: 2",
+                "    event_types: 1",
+                "    event_types: 1",
+                "    latencies_ms: 56",
+                "    latencies_ms: 78",
+                "    latencies_ms: 14",
+                "    latencies_ms: 56",
+                "    latencies_ms: 78",
+                "    latencies_ms: 14",
+                "    return_codes: 0",
+                "    return_codes: 0",
+                "    return_codes: 0",
+                "    return_codes: 0",
+                "    return_codes: 0",
+                "    return_codes: 0",
+                "  >",
+                ">",
+                "version: 2\n");
+        assertEquals(want, got);
     }
 
-    @SmallTest
-    public void testSeveralDmsBatches() throws Exception {
-        log(105, LATENCIES);
-        log(106, LATENCIES);
-        log(105, LATENCIES);
-        log(107, LATENCIES);
-
-        verifyLoggedDnsEvents(
-            new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES),
-            new DnsEvent(106, EVENT_TYPES, RETURN_CODES, LATENCIES),
-            new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES),
-            new DnsEvent(107, EVENT_TYPES, RETURN_CODES, LATENCIES));
-    }
-
-    @SmallTest
-    public void testDnsBatchAndNetworkLost() throws Exception {
-        byte[] eventTypes = Arrays.copyOf(EVENT_TYPES, 20);
-        byte[] returnCodes = Arrays.copyOf(RETURN_CODES, 20);
-        int[] latencies = Arrays.copyOf(LATENCIES, 20);
-
-        log(105, LATENCIES);
-        log(105, latencies);
-        mCallbackCaptor.getValue().onLost(new Network(105));
-        log(105, LATENCIES);
-
-        verifyLoggedDnsEvents(
-            new DnsEvent(105, eventTypes, returnCodes, latencies),
-            new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES),
-            new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES));
-    }
-
-    @SmallTest
-    public void testConcurrentDnsBatchesAndDumps() throws Exception {
-        final long stop = System.currentTimeMillis() + 100;
-        final PrintWriter pw = new PrintWriter(new FileOutputStream("/dev/null"));
-        new Thread() {
-            public void run() {
-                while (System.currentTimeMillis() < stop) {
-                    mNetdEventListenerService.dump(pw);
-                }
-            }
-        }.start();
-
-        logDnsAsync(105, LATENCIES);
-        logDnsAsync(106, LATENCIES);
-        logDnsAsync(107, LATENCIES);
-
-        verifyLoggedDnsEvents(500,
-            new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES),
-            new DnsEvent(106, EVENT_TYPES, RETURN_CODES, LATENCIES),
-            new DnsEvent(107, EVENT_TYPES, RETURN_CODES, LATENCIES));
-    }
-
-    @SmallTest
-    public void testConcurrentDnsBatchesAndNetworkLoss() throws Exception {
-        logDnsAsync(105, LATENCIES);
-        Thread.sleep(10L);
-        // call onLost() asynchronously to logDnsAsync's onDnsEvent() calls.
-        mCallbackCaptor.getValue().onLost(new Network(105));
-
-        // do not verify unpredictable batch
-        verify(mLog, timeout(500).times(1)).log(any());
-    }
-
-    @SmallTest
+    @Test
     public void testConnectLogging() throws Exception {
+        asyncDump(100);
+
         final int OK = 0;
         Thread[] logActions = {
             // ignored
-            connectEventAction(OsConstants.EALREADY, 0, EXAMPLE_IPV4),
-            connectEventAction(OsConstants.EALREADY, 0, EXAMPLE_IPV6),
-            connectEventAction(OsConstants.EINPROGRESS, 0, EXAMPLE_IPV4),
-            connectEventAction(OsConstants.EINPROGRESS, 0, EXAMPLE_IPV6),
-            connectEventAction(OsConstants.EINPROGRESS, 0, EXAMPLE_IPV6),
+            connectEventAction(100, OsConstants.EALREADY, 0, EXAMPLE_IPV4),
+            connectEventAction(100, OsConstants.EALREADY, 0, EXAMPLE_IPV6),
+            connectEventAction(100, OsConstants.EINPROGRESS, 0, EXAMPLE_IPV4),
+            connectEventAction(101, OsConstants.EINPROGRESS, 0, EXAMPLE_IPV6),
+            connectEventAction(101, OsConstants.EINPROGRESS, 0, EXAMPLE_IPV6),
             // valid latencies
-            connectEventAction(OK, 110, EXAMPLE_IPV4),
-            connectEventAction(OK, 23, EXAMPLE_IPV4),
-            connectEventAction(OK, 45, EXAMPLE_IPV4),
-            connectEventAction(OK, 56, EXAMPLE_IPV4),
-            connectEventAction(OK, 523, EXAMPLE_IPV6),
-            connectEventAction(OK, 214, EXAMPLE_IPV6),
-            connectEventAction(OK, 67, EXAMPLE_IPV6),
+            connectEventAction(100, OK, 110, EXAMPLE_IPV4),
+            connectEventAction(100, OK, 23, EXAMPLE_IPV4),
+            connectEventAction(100, OK, 45, EXAMPLE_IPV4),
+            connectEventAction(101, OK, 56, EXAMPLE_IPV4),
+            connectEventAction(101, OK, 523, EXAMPLE_IPV6),
+            connectEventAction(101, OK, 214, EXAMPLE_IPV6),
+            connectEventAction(101, OK, 67, EXAMPLE_IPV6),
             // errors
-            connectEventAction(OsConstants.EPERM, 0, EXAMPLE_IPV4),
-            connectEventAction(OsConstants.EPERM, 0, EXAMPLE_IPV4),
-            connectEventAction(OsConstants.EAGAIN, 0, EXAMPLE_IPV4),
-            connectEventAction(OsConstants.EACCES, 0, EXAMPLE_IPV4),
-            connectEventAction(OsConstants.EACCES, 0, EXAMPLE_IPV4),
-            connectEventAction(OsConstants.EACCES, 0, EXAMPLE_IPV6),
-            connectEventAction(OsConstants.EADDRINUSE, 0, EXAMPLE_IPV4),
-            connectEventAction(OsConstants.ETIMEDOUT, 0, EXAMPLE_IPV4),
-            connectEventAction(OsConstants.ETIMEDOUT, 0, EXAMPLE_IPV6),
-            connectEventAction(OsConstants.ETIMEDOUT, 0, EXAMPLE_IPV6),
-            connectEventAction(OsConstants.ECONNREFUSED, 0, EXAMPLE_IPV4),
+            connectEventAction(100, OsConstants.EPERM, 0, EXAMPLE_IPV4),
+            connectEventAction(101, OsConstants.EPERM, 0, EXAMPLE_IPV4),
+            connectEventAction(100, OsConstants.EAGAIN, 0, EXAMPLE_IPV4),
+            connectEventAction(100, OsConstants.EACCES, 0, EXAMPLE_IPV4),
+            connectEventAction(101, OsConstants.EACCES, 0, EXAMPLE_IPV4),
+            connectEventAction(101, OsConstants.EACCES, 0, EXAMPLE_IPV6),
+            connectEventAction(100, OsConstants.EADDRINUSE, 0, EXAMPLE_IPV4),
+            connectEventAction(101, OsConstants.ETIMEDOUT, 0, EXAMPLE_IPV4),
+            connectEventAction(100, OsConstants.ETIMEDOUT, 0, EXAMPLE_IPV6),
+            connectEventAction(100, OsConstants.ETIMEDOUT, 0, EXAMPLE_IPV6),
+            connectEventAction(101, OsConstants.ECONNREFUSED, 0, EXAMPLE_IPV4),
         };
 
         for (Thread t : logActions) {
@@ -207,121 +201,124 @@
             t.join();
         }
 
-        List<IpConnectivityEvent> events = new ArrayList<>();
-        mNetdEventListenerService.flushStatistics(events);
-
-        IpConnectivityEvent got = events.get(0);
-        String want = joinLines(
-                "connect_statistics <",
-                "  connect_count: 12",
-                "  errnos_counters <",
-                "    key: 1",
-                "    value: 2",
+        String got = flushStatistics();
+        String want = String.join("\n",
+                "dropped_events: 0",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 4",
+                "  network_id: 100",
+                "  time_ms: 0",
+                "  transports: 2",
+                "  connect_statistics <",
+                "    connect_blocking_count: 3",
+                "    connect_count: 6",
+                "    errnos_counters <",
+                "      key: 1",
+                "      value: 1",
+                "    >",
+                "    errnos_counters <",
+                "      key: 11",
+                "      value: 1",
+                "    >",
+                "    errnos_counters <",
+                "      key: 13",
+                "      value: 1",
+                "    >",
+                "    errnos_counters <",
+                "      key: 98",
+                "      value: 1",
+                "    >",
+                "    errnos_counters <",
+                "      key: 110",
+                "      value: 2",
+                "    >",
+                "    ipv6_addr_count: 1",
+                "    latencies_ms: 23",
+                "    latencies_ms: 45",
+                "    latencies_ms: 110",
                 "  >",
-                "  errnos_counters <",
-                "    key: 11",
-                "    value: 1",
-                "  >",
-                "  errnos_counters <",
-                "    key: 13",
-                "    value: 3",
-                "  >",
-                "  errnos_counters <",
-                "    key: 98",
-                "    value: 1",
-                "  >",
-                "  errnos_counters <",
-                "    key: 110",
-                "    value: 3",
-                "  >",
-                "  errnos_counters <",
-                "    key: 111",
-                "    value: 1",
-                "  >",
-                "  ipv6_addr_count: 6",
-                "  latencies_ms: 23",
-                "  latencies_ms: 45",
-                "  latencies_ms: 56",
-                "  latencies_ms: 67",
-                "  latencies_ms: 110",
-                "  latencies_ms: 214",
-                "  latencies_ms: 523",
                 ">",
-                "time_ms: 0",
-                "transport: 0");
-        verifyConnectEvent(want, got);
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 2",
+                "  network_id: 101",
+                "  time_ms: 0",
+                "  transports: 1",
+                "  connect_statistics <",
+                "    connect_blocking_count: 4",
+                "    connect_count: 6",
+                "    errnos_counters <",
+                "      key: 1",
+                "      value: 1",
+                "    >",
+                "    errnos_counters <",
+                "      key: 13",
+                "      value: 2",
+                "    >",
+                "    errnos_counters <",
+                "      key: 110",
+                "      value: 1",
+                "    >",
+                "    errnos_counters <",
+                "      key: 111",
+                "      value: 1",
+                "    >",
+                "    ipv6_addr_count: 5",
+                "    latencies_ms: 56",
+                "    latencies_ms: 67",
+                "    latencies_ms: 214",
+                "    latencies_ms: 523",
+                "  >",
+                ">",
+                "version: 2\n");
+        assertEquals(want, got);
     }
 
-    Thread connectEventAction(int error, int latencyMs, String ipAddr) {
+    Thread connectEventAction(int netId, int error, int latencyMs, String ipAddr) {
         return new Thread(() -> {
             try {
-                mNetdEventListenerService.onConnectEvent(100, error, latencyMs, ipAddr, 80, 1);
+                mNetdEventListenerService.onConnectEvent(netId, error, latencyMs, ipAddr, 80, 1);
             } catch (Exception e) {
                 fail(e.toString());
             }
         });
     }
 
-    void log(int netId, int[] latencies) {
-        try {
-            for (int l : latencies) {
-                mNetdEventListenerService.onDnsEvent(netId, EVENT_TYPE, RETURN_CODE, l, null, null,
-                        0, 0);
+    void dnsEvent(int netId, int type, int result, int latency) throws Exception {
+        mNetdEventListenerService.onDnsEvent(netId, type, result, latency, "", null, 0, 0);
+    }
+
+    void asyncDump(long durationMs) throws Exception {
+        final long stop = System.currentTimeMillis() + durationMs;
+        final PrintWriter pw = new PrintWriter(new FileOutputStream("/dev/null"));
+        new Thread(() -> {
+            while (System.currentTimeMillis() < stop) {
+                mNetdEventListenerService.dump(pw);
             }
-        } catch (RemoteException re) {
-            throw re.rethrowFromSystemServer();
-        }
+        }).start();
     }
 
-    void logDnsAsync(int netId, int[] latencies) {
-        new Thread() {
-            public void run() {
-                log(netId, latencies);
+    // TODO: instead of comparing textpb to textpb, parse textpb and compare proto to proto.
+    String flushStatistics() throws Exception {
+        IpConnectivityMetrics metricsService =
+                new IpConnectivityMetrics(mock(Context.class), (ctx) -> 2000);
+        metricsService.mNetdListener = mNetdEventListenerService;
+
+        StringWriter buffer = new StringWriter();
+        PrintWriter writer = new PrintWriter(buffer);
+        metricsService.impl.dump(null, writer, new String[]{"flush"});
+        byte[] bytes = Base64.decode(buffer.toString(), Base64.DEFAULT);
+        IpConnectivityLog log = IpConnectivityLog.parseFrom(bytes);
+        for (IpConnectivityEvent ev : log.events) {
+            if (ev.getConnectStatistics() == null) {
+                continue;
             }
-        }.start();
-    }
-
-    void verifyLoggedDnsEvents(DnsEvent... expected) {
-        verifyLoggedDnsEvents(0, expected);
-    }
-
-    void verifyLoggedDnsEvents(int wait, DnsEvent... expectedEvents) {
-        verify(mLog, timeout(wait).times(expectedEvents.length)).log(mDnsEvCaptor.capture());
-        for (DnsEvent got : mDnsEvCaptor.getAllValues()) {
-            OptionalInt index = IntStream.range(0, expectedEvents.length)
-                    .filter(i -> dnsEventsEqual(expectedEvents[i], got))
-                    .findFirst();
-            // Don't match same expected event more than once.
-            index.ifPresent(i -> expectedEvents[i] = null);
-            assertTrue(index.isPresent());
-        }
-    }
-
-    /** equality function for DnsEvent to avoid overriding equals() and hashCode(). */
-    static boolean dnsEventsEqual(DnsEvent expected, DnsEvent got) {
-        return (expected == got) || ((expected != null) && (got != null)
-                && (expected.netId == got.netId)
-                && Arrays.equals(expected.eventTypes, got.eventTypes)
-                && Arrays.equals(expected.returnCodes, got.returnCodes)
-                && Arrays.equals(expected.latenciesMs, got.latenciesMs));
-    }
-
-    static String joinLines(String ... elems) {
-        StringBuilder b = new StringBuilder();
-        for (String s : elems) {
-            b.append(s).append("\n");
-        }
-        return b.toString();
-    }
-
-    static void verifyConnectEvent(String expected, IpConnectivityEvent got) {
-        try {
-            Arrays.sort(got.connectStatistics.latenciesMs);
-            Arrays.sort(got.connectStatistics.errnosCounters,
+            // Sort repeated fields of connect() events arriving in non-deterministic order.
+            Arrays.sort(ev.getConnectStatistics().latenciesMs);
+            Arrays.sort(ev.getConnectStatistics().errnosCounters,
                     Comparator.comparingInt((p) -> p.key));
-            assertEquals(expected, got.toString());
-        } catch (Exception e) {
-            fail(e.toString());
         }
+        return log.toString();
     }
 }