diff --git a/framework/Android.bp b/framework/Android.bp
index 86433e1..5b33328 100644
--- a/framework/Android.bp
+++ b/framework/Android.bp
@@ -23,6 +23,26 @@
     default_applicable_licenses: ["frameworks_base_license"],
 }
 
+java_library {
+    name: "framework-connectivity-protos",
+    sdk_version: "module_current",
+    proto: {
+        type: "nano",
+    },
+    srcs: [
+        // TODO: consider moving relevant .proto files directly to the module directory
+        ":framework-javastream-protos",
+    ],
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.tethering",
+    ],
+    jarjar_rules: "jarjar-rules-proto.txt",
+    visibility: [
+        "//visibility:private",
+    ],
+}
+
 filegroup {
     name: "framework-connectivity-internal-sources",
     srcs: [
@@ -63,8 +83,7 @@
     name: "framework-connectivity",
     api_only: true,
     defaults: ["framework-module-defaults"],
-    // TODO: build against module API
-    platform_apis: true,
+    installable: true,
     srcs: [
         ":framework-connectivity-sources",
     ],
@@ -81,18 +100,15 @@
     libs: [
         "unsupportedappusage",
     ],
-    permitted_packages: ["android.net", "com.android.connectivity.aidl"],
+    permitted_packages: [
+        "android.net",
+        "com.android.connectivity.aidl",
+    ],
 }
 
 java_library {
     name: "framework-connectivity.impl",
-    // Instead of building against private API (framework.jar),
-    // build against core_platform + framework-minus-apex + module
-    // stub libs. This allows framework.jar to depend on this library,
-    // so it can be part of the private API until all clients have been migrated.
-    // TODO: just build against module_api, and remove this jar from
-    // the private API.
-    sdk_version: "core_platform",
+    sdk_version: "module_current",
     srcs: [
         ":framework-connectivity-sources",
     ],
@@ -103,18 +119,22 @@
         ],
     },
     libs: [
-        "framework-minus-apex",
-        // TODO: just framework-tethering, framework-wifi when building against module_api
-        "framework-tethering.stubs.module_lib",
-        "framework-wifi.stubs.module_lib",
+        // TODO (b/183097033) remove once module_current includes core_current
+        "stable.core.platform.api.stubs",
+        "framework-tethering",
+        "framework-wifi",
         "unsupportedappusage",
         "ServiceConnectivityResources",
     ],
     static_libs: [
+        "framework-connectivity-protos",
         "net-utils-device-common",
     ],
     jarjar_rules: "jarjar-rules.txt",
     apex_available: ["com.android.tethering"],
     installable: true,
-    permitted_packages: ["android.net", "com.android.connectivity.aidl"],
+    permitted_packages: [
+        "android.net",
+        "com.android.connectivity.aidl",
+    ],
 }
diff --git a/framework/jarjar-rules-proto.txt b/framework/jarjar-rules-proto.txt
new file mode 100644
index 0000000..37b4dec
--- /dev/null
+++ b/framework/jarjar-rules-proto.txt
@@ -0,0 +1,3 @@
+keep android.net.NetworkCapabilitiesProto
+keep android.net.NetworkProto
+keep android.net.NetworkRequestProto
diff --git a/framework/jarjar-rules.txt b/framework/jarjar-rules.txt
index 381a4ac..0959840 100644
--- a/framework/jarjar-rules.txt
+++ b/framework/jarjar-rules.txt
@@ -5,3 +5,6 @@
 zap com.android.net.module.annotation.**
 zap com.android.internal.annotations.**
 
+rule android.net.NetworkCapabilitiesProto* android.net.connectivity.proto.NetworkCapabilitiesProto@1
+rule android.net.NetworkProto* android.net.connectivity.proto.NetworkProto@1
+rule android.net.NetworkRequestProto* android.net.connectivity.proto.NetworkRequestProto@1
diff --git a/framework/src/android/net/ConnectivityDiagnosticsManager.java b/framework/src/android/net/ConnectivityDiagnosticsManager.java
index 5234494..3598ebc 100644
--- a/framework/src/android/net/ConnectivityDiagnosticsManager.java
+++ b/framework/src/android/net/ConnectivityDiagnosticsManager.java
@@ -28,7 +28,6 @@
 import android.os.RemoteException;
 
 import com.android.internal.annotations.VisibleForTesting;
-import com.android.internal.util.Preconditions;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -70,8 +69,8 @@
 
     /** @hide */
     public ConnectivityDiagnosticsManager(Context context, IConnectivityManager service) {
-        mContext = Preconditions.checkNotNull(context, "missing context");
-        mService = Preconditions.checkNotNull(service, "missing IConnectivityManager");
+        mContext = Objects.requireNonNull(context, "missing context");
+        mService = Objects.requireNonNull(service, "missing IConnectivityManager");
     }
 
     /** @hide */
diff --git a/framework/src/android/net/ConnectivityManager.java b/framework/src/android/net/ConnectivityManager.java
index f748159..9f63abf 100644
--- a/framework/src/android/net/ConnectivityManager.java
+++ b/framework/src/android/net/ConnectivityManager.java
@@ -62,7 +62,6 @@
 import android.os.Process;
 import android.os.RemoteException;
 import android.os.ResultReceiver;
-import android.os.ServiceManager;
 import android.os.ServiceSpecificException;
 import android.os.UserHandle;
 import android.provider.Settings;
@@ -76,7 +75,6 @@
 
 import com.android.connectivity.aidl.INetworkAgent;
 import com.android.internal.annotations.GuardedBy;
-import com.android.internal.util.Preconditions;
 
 import libcore.net.event.NetworkEventDispatcher;
 
@@ -842,7 +840,6 @@
 
     private final Context mContext;
 
-    private INetworkPolicyManager mNPManager;
     private final TetheringManager mTetheringManager;
 
     /**
@@ -1777,7 +1774,9 @@
         // Map from type to transports.
         final int NOT_FOUND = -1;
         final int transport = sLegacyTypeToTransport.get(type, NOT_FOUND);
-        Preconditions.checkArgument(transport != NOT_FOUND, "unknown legacy type: " + type);
+        if (transport == NOT_FOUND) {
+            throw new IllegalArgumentException("unknown legacy type: " + type);
+        }
         nc.addTransportType(transport);
 
         // Map from type to capabilities.
@@ -1882,8 +1881,8 @@
         }
 
         private PacketKeepalive(Network network, PacketKeepaliveCallback callback) {
-            Preconditions.checkNotNull(network, "network cannot be null");
-            Preconditions.checkNotNull(callback, "callback cannot be null");
+            Objects.requireNonNull(network, "network cannot be null");
+            Objects.requireNonNull(callback, "callback cannot be null");
             mNetwork = network;
             mExecutor = Executors.newSingleThreadExecutor();
             mCallback = new ISocketKeepaliveCallback.Stub() {
@@ -2258,7 +2257,9 @@
      */
     public void removeDefaultNetworkActiveListener(@NonNull OnNetworkActiveListener l) {
         INetworkActivityListener rl = mNetworkActivityListeners.get(l);
-        Preconditions.checkArgument(rl != null, "Listener was not registered.");
+        if (rl == null) {
+            throw new IllegalArgumentException("Listener was not registered.");
+        }
         try {
             mService.registerNetworkActivityListener(rl);
         } catch (RemoteException e) {
@@ -2286,8 +2287,8 @@
      * {@hide}
      */
     public ConnectivityManager(Context context, IConnectivityManager service) {
-        mContext = Preconditions.checkNotNull(context, "missing context");
-        mService = Preconditions.checkNotNull(service, "missing IConnectivityManager");
+        mContext = Objects.requireNonNull(context, "missing context");
+        mService = Objects.requireNonNull(service, "missing IConnectivityManager");
         mTetheringManager = (TetheringManager) mContext.getSystemService(Context.TETHERING_SERVICE);
         sInstance = this;
     }
@@ -2319,7 +2320,7 @@
             @NonNull String callingPackage, @Nullable String callingAttributionTag,
             boolean throwException) {
         return Settings.checkAndNoteWriteSettingsOperation(context, uid, callingPackage,
-                throwException);
+                callingAttributionTag, throwException);
     }
 
     /**
@@ -2554,7 +2555,7 @@
     @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED)
     public void startTethering(int type, boolean showProvisioningUi,
             final OnStartTetheringCallback callback, Handler handler) {
-        Preconditions.checkNotNull(callback, "OnStartTetheringCallback cannot be null.");
+        Objects.requireNonNull(callback, "OnStartTetheringCallback cannot be null.");
 
         final Executor executor = new Executor() {
             @Override
@@ -2647,7 +2648,7 @@
     public void registerTetheringEventCallback(
             @NonNull @CallbackExecutor Executor executor,
             @NonNull final OnTetheringEventCallback callback) {
-        Preconditions.checkNotNull(callback, "OnTetheringEventCallback cannot be null.");
+        Objects.requireNonNull(callback, "OnTetheringEventCallback cannot be null.");
 
         final TetheringEventCallback tetherCallback =
                 new TetheringEventCallback() {
@@ -2945,7 +2946,7 @@
     public void getLatestTetheringEntitlementResult(int type, boolean showEntitlementUi,
             @NonNull @CallbackExecutor Executor executor,
             @NonNull final OnTetheringEntitlementResultListener listener) {
-        Preconditions.checkNotNull(listener, "TetheringEntitlementResultListener cannot be null.");
+        Objects.requireNonNull(listener, "TetheringEntitlementResultListener cannot be null.");
         ResultReceiver wrappedListener = new ResultReceiver(null) {
             @Override
             protected void onReceiveResult(int resultCode, Bundle resultData) {
@@ -3318,7 +3319,9 @@
         }
 
         public NetworkCallback(@Flag int flags) {
-            Preconditions.checkArgument((flags & VALID_FLAGS) == flags);
+            if ((flags & VALID_FLAGS) != flags) {
+                throw new IllegalArgumentException("Invalid flags");
+            }
             mFlags = flags;
         }
 
@@ -3604,7 +3607,7 @@
         }
 
         CallbackHandler(Handler handler) {
-            this(Preconditions.checkNotNull(handler, "Handler cannot be null.").getLooper());
+            this(Objects.requireNonNull(handler, "Handler cannot be null.").getLooper());
         }
 
         @Override
@@ -3702,9 +3705,9 @@
             int timeoutMs, NetworkRequest.Type reqType, int legacyType, CallbackHandler handler) {
         printStackTrace();
         checkCallbackNotNull(callback);
-        Preconditions.checkArgument(
-                reqType == TRACK_DEFAULT || reqType == TRACK_SYSTEM_DEFAULT || need != null,
-                "null NetworkCapabilities");
+        if (reqType != TRACK_DEFAULT && reqType != TRACK_SYSTEM_DEFAULT && need == null) {
+            throw new IllegalArgumentException("null NetworkCapabilities");
+        }
         final NetworkRequest request;
         final String callingPackageName = mContext.getOpPackageName();
         try {
@@ -4051,15 +4054,17 @@
     }
 
     private static void checkPendingIntentNotNull(PendingIntent intent) {
-        Preconditions.checkNotNull(intent, "PendingIntent cannot be null.");
+        Objects.requireNonNull(intent, "PendingIntent cannot be null.");
     }
 
     private static void checkCallbackNotNull(NetworkCallback callback) {
-        Preconditions.checkNotNull(callback, "null NetworkCallback");
+        Objects.requireNonNull(callback, "null NetworkCallback");
     }
 
     private static void checkTimeout(int timeoutMs) {
-        Preconditions.checkArgumentPositive(timeoutMs, "timeoutMs must be strictly positive.");
+        if (timeoutMs <= 0) {
+            throw new IllegalArgumentException("timeoutMs must be strictly positive.");
+        }
     }
 
     /**
@@ -4339,8 +4344,9 @@
         // Find all requests associated to this callback and stop callback triggers immediately.
         // Callback is reusable immediately. http://b/20701525, http://b/35921499.
         synchronized (sCallbacks) {
-            Preconditions.checkArgument(networkCallback.networkRequest != null,
-                    "NetworkCallback was not registered");
+            if (networkCallback.networkRequest == null) {
+                throw new IllegalArgumentException("NetworkCallback was not registered");
+            }
             if (networkCallback.networkRequest == ALREADY_UNREGISTERED) {
                 Log.d(TAG, "NetworkCallback was already unregistered");
                 return;
@@ -4786,17 +4792,6 @@
     public @interface RestrictBackgroundStatus {
     }
 
-    private INetworkPolicyManager getNetworkPolicyManager() {
-        synchronized (this) {
-            if (mNPManager != null) {
-                return mNPManager;
-            }
-            mNPManager = INetworkPolicyManager.Stub.asInterface(ServiceManager
-                    .getService(Context.NETWORK_POLICY_SERVICE));
-            return mNPManager;
-        }
-    }
-
     /**
      * Determines if the calling application is subject to metered network restrictions while
      * running on background.
@@ -4807,7 +4802,7 @@
      */
     public @RestrictBackgroundStatus int getRestrictBackgroundStatus() {
         try {
-            return getNetworkPolicyManager().getRestrictBackgroundByCaller();
+            return mService.getRestrictBackgroundStatusByCaller();
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
diff --git a/framework/src/android/net/ConnectivityResources.java b/framework/src/android/net/ConnectivityResources.java
new file mode 100644
index 0000000..18f0de0
--- /dev/null
+++ b/framework/src/android/net/ConnectivityResources.java
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static android.content.pm.PackageManager.MATCH_SYSTEM_ONLY;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.res.Resources;
+import android.util.Log;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import java.util.List;
+
+/**
+ * Utility to obtain the {@link com.android.server.ConnectivityService} {@link Resources}, in the
+ * ServiceConnectivityResources APK.
+ * @hide
+ */
+public class ConnectivityResources {
+    private static final String RESOURCES_APK_INTENT =
+            "com.android.server.connectivity.intent.action.SERVICE_CONNECTIVITY_RESOURCES_APK";
+    private static final String RES_PKG_DIR = "/apex/com.android.tethering/";
+
+    @NonNull
+    private final Context mContext;
+
+    @Nullable
+    private Context mResourcesContext = null;
+
+    @Nullable
+    private static Context sTestResourcesContext = null;
+
+    public ConnectivityResources(Context context) {
+        mContext = context;
+    }
+
+    /**
+     * Convenience method to mock all resources for the duration of a test.
+     *
+     * Call with a null context to reset after the test.
+     */
+    @VisibleForTesting
+    public static void setResourcesContextForTest(@Nullable Context testContext) {
+        sTestResourcesContext = testContext;
+    }
+
+    /**
+     * Get the {@link Context} of the resources package.
+     */
+    public synchronized Context getResourcesContext() {
+        if (sTestResourcesContext != null) {
+            return sTestResourcesContext;
+        }
+
+        if (mResourcesContext != null) {
+            return mResourcesContext;
+        }
+
+        final List<ResolveInfo> pkgs = mContext.getPackageManager()
+                .queryIntentActivities(new Intent(RESOURCES_APK_INTENT), MATCH_SYSTEM_ONLY);
+        pkgs.removeIf(pkg -> !pkg.activityInfo.applicationInfo.sourceDir.startsWith(RES_PKG_DIR));
+        if (pkgs.size() > 1) {
+            Log.wtf(ConnectivityResources.class.getSimpleName(),
+                    "More than one package found: " + pkgs);
+        }
+        if (pkgs.isEmpty()) {
+            throw new IllegalStateException("No connectivity resource package found");
+        }
+
+        final Context pkgContext;
+        try {
+            pkgContext = mContext.createPackageContext(
+                    pkgs.get(0).activityInfo.applicationInfo.packageName, 0 /* flags */);
+        } catch (PackageManager.NameNotFoundException e) {
+            throw new IllegalStateException("Resolved package not found", e);
+        }
+
+        mResourcesContext = pkgContext;
+        return pkgContext;
+    }
+
+    /**
+     * Get the {@link Resources} of the ServiceConnectivityResources APK.
+     */
+    public Resources get() {
+        return getResourcesContext().getResources();
+    }
+}
diff --git a/framework/src/android/net/IConnectivityManager.aidl b/framework/src/android/net/IConnectivityManager.aidl
index d83cc16..98f3d40 100644
--- a/framework/src/android/net/IConnectivityManager.aidl
+++ b/framework/src/android/net/IConnectivityManager.aidl
@@ -220,4 +220,6 @@
 
     void setProfileNetworkPreference(in UserHandle profile, int preference,
             in IOnCompleteListener listener);
+
+    int getRestrictBackgroundStatusByCaller();
 }
diff --git a/framework/src/android/net/MacAddress.java b/framework/src/android/net/MacAddress.java
index c83c23a..26a504a 100644
--- a/framework/src/android/net/MacAddress.java
+++ b/framework/src/android/net/MacAddress.java
@@ -25,7 +25,6 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 
-import com.android.internal.util.Preconditions;
 import com.android.net.module.util.MacAddressUtils;
 
 import java.lang.annotation.Retention;
@@ -34,6 +33,7 @@
 import java.net.UnknownHostException;
 import java.security.SecureRandom;
 import java.util.Arrays;
+import java.util.Objects;
 
 /**
  * Representation of a MAC address.
@@ -229,7 +229,7 @@
      * @hide
      */
     public static @NonNull byte[] byteAddrFromStringAddr(String addr) {
-        Preconditions.checkNotNull(addr);
+        Objects.requireNonNull(addr);
         String[] parts = addr.split(":");
         if (parts.length != ETHER_ADDR_LEN) {
             throw new IllegalArgumentException(addr + " was not a valid MAC address");
@@ -275,7 +275,7 @@
     // Internal conversion function equivalent to longAddrFromByteAddr(byteAddrFromStringAddr(addr))
     // that avoids the allocation of an intermediary byte[].
     private static long longAddrFromStringAddr(String addr) {
-        Preconditions.checkNotNull(addr);
+        Objects.requireNonNull(addr);
         String[] parts = addr.split(":");
         if (parts.length != ETHER_ADDR_LEN) {
             throw new IllegalArgumentException(addr + " was not a valid MAC address");
@@ -364,8 +364,8 @@
      *
      */
     public boolean matches(@NonNull MacAddress baseAddress, @NonNull MacAddress mask) {
-        Preconditions.checkNotNull(baseAddress);
-        Preconditions.checkNotNull(mask);
+        Objects.requireNonNull(baseAddress);
+        Objects.requireNonNull(mask);
         return (mAddr & mask.mAddr) == (baseAddress.mAddr & mask.mAddr);
     }
 
diff --git a/framework/src/android/net/NetworkCapabilities.java b/framework/src/android/net/NetworkCapabilities.java
index 058f3c9..c6dfcee 100644
--- a/framework/src/android/net/NetworkCapabilities.java
+++ b/framework/src/android/net/NetworkCapabilities.java
@@ -35,7 +35,6 @@
 import android.util.proto.ProtoOutputStream;
 
 import com.android.internal.annotations.VisibleForTesting;
-import com.android.internal.util.Preconditions;
 import com.android.net.module.util.CollectionUtils;
 import com.android.net.module.util.NetworkCapabilitiesUtils;
 
@@ -2099,8 +2098,9 @@
     }
 
     private static void checkValidTransportType(@Transport int transport) {
-        Preconditions.checkArgument(
-                isValidTransport(transport), "Invalid TransportType " + transport);
+        if (!isValidTransport(transport)) {
+            throw new IllegalArgumentException("Invalid TransportType " + transport);
+        }
     }
 
     private static boolean isValidCapability(@NetworkCapabilities.NetCapability int capability) {
@@ -2108,8 +2108,9 @@
     }
 
     private static void checkValidCapability(@NetworkCapabilities.NetCapability int capability) {
-        Preconditions.checkArgument(isValidCapability(capability),
-                "NetworkCapability " + capability + "out of range");
+        if (!isValidCapability(capability)) {
+            throw new IllegalArgumentException("NetworkCapability " + capability + "out of range");
+        }
     }
 
     /**
diff --git a/framework/src/android/net/StaticIpConfiguration.java b/framework/src/android/net/StaticIpConfiguration.java
index ce54597..7904f7a 100644
--- a/framework/src/android/net/StaticIpConfiguration.java
+++ b/framework/src/android/net/StaticIpConfiguration.java
@@ -24,7 +24,6 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 
-import com.android.internal.util.Preconditions;
 import com.android.net.module.util.InetAddressUtils;
 
 import java.net.InetAddress;
@@ -153,7 +152,7 @@
          * @return The {@link Builder} for chaining.
          */
         public @NonNull Builder setDnsServers(@NonNull Iterable<InetAddress> dnsServers) {
-            Preconditions.checkNotNull(dnsServers);
+            Objects.requireNonNull(dnsServers);
             mDnsServers = dnsServers;
             return this;
         }
diff --git a/framework/src/android/net/TestNetworkManager.java b/framework/src/android/net/TestNetworkManager.java
index a174a7b..a7a6235 100644
--- a/framework/src/android/net/TestNetworkManager.java
+++ b/framework/src/android/net/TestNetworkManager.java
@@ -21,10 +21,9 @@
 import android.os.IBinder;
 import android.os.RemoteException;
 
-import com.android.internal.util.Preconditions;
-
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.Objects;
 
 /**
  * Class that allows creation and management of per-app, test-only networks
@@ -50,7 +49,7 @@
 
     /** @hide */
     public TestNetworkManager(@NonNull ITestNetworkManager service) {
-        mService = Preconditions.checkNotNull(service, "missing ITestNetworkManager");
+        mService = Objects.requireNonNull(service, "missing ITestNetworkManager");
     }
 
     /**
@@ -93,7 +92,7 @@
      */
     public void setupTestNetwork(
             @NonNull LinkProperties lp, boolean isMetered, @NonNull IBinder binder) {
-        Preconditions.checkNotNull(lp, "Invalid LinkProperties");
+        Objects.requireNonNull(lp, "Invalid LinkProperties");
         setupTestNetwork(lp.getInterfaceName(), lp, isMetered, new int[0], binder);
     }
 
diff --git a/framework/src/android/net/TestNetworkSpecifier.java b/framework/src/android/net/TestNetworkSpecifier.java
index b7470a5..117457d 100644
--- a/framework/src/android/net/TestNetworkSpecifier.java
+++ b/framework/src/android/net/TestNetworkSpecifier.java
@@ -23,8 +23,6 @@
 import android.os.Parcelable;
 import android.text.TextUtils;
 
-import com.android.internal.util.Preconditions;
-
 import java.util.Objects;
 
 /**
@@ -43,7 +41,9 @@
     private final String mInterfaceName;
 
     public TestNetworkSpecifier(@NonNull String interfaceName) {
-        Preconditions.checkStringNotEmpty(interfaceName);
+        if (TextUtils.isEmpty(interfaceName)) {
+            throw new IllegalArgumentException("Empty interfaceName");
+        }
         mInterfaceName = interfaceName;
     }
 
diff --git a/framework/src/android/net/apf/ApfCapabilities.java b/framework/src/android/net/apf/ApfCapabilities.java
index bf5b26e..85b2471 100644
--- a/framework/src/android/net/apf/ApfCapabilities.java
+++ b/framework/src/android/net/apf/ApfCapabilities.java
@@ -19,12 +19,12 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
+import android.content.Context;
 import android.content.res.Resources;
+import android.net.ConnectivityResources;
 import android.os.Parcel;
 import android.os.Parcelable;
 
-import com.android.internal.R;
-
 /**
  * APF program support capabilities. APF stands for Android Packet Filtering and it is a flexible
  * way to drop unwanted network packets to save power.
@@ -36,6 +36,8 @@
  */
 @SystemApi
 public final class ApfCapabilities implements Parcelable {
+    private static ConnectivityResources sResources;
+
     /**
      * Version of APF instruction set supported for packet filtering. 0 indicates no support for
      * packet filtering using APF programs.
@@ -65,6 +67,14 @@
         apfPacketFormat = in.readInt();
     }
 
+    @NonNull
+    private static synchronized ConnectivityResources getResources(@NonNull Context ctx) {
+        if (sResources == null)  {
+            sResources = new ConnectivityResources(ctx);
+        }
+        return sResources;
+    }
+
 
     @Override
     public int describeContents() {
@@ -121,13 +131,43 @@
      * @return Whether the APF Filter in the device should filter out IEEE 802.3 Frames.
      */
     public static boolean getApfDrop8023Frames() {
-        return Resources.getSystem().getBoolean(R.bool.config_apfDrop802_3Frames);
+        // TODO(b/183076074): remove reading resources from system resources
+        final Resources systemRes = Resources.getSystem();
+        final int id = systemRes.getIdentifier("config_apfDrop802_3Frames", "bool", "android");
+        return systemRes.getBoolean(id);
+    }
+
+    /**
+     * @return Whether the APF Filter in the device should filter out IEEE 802.3 Frames.
+     * @hide
+     */
+    public static boolean getApfDrop8023Frames(@NonNull Context context) {
+        final ConnectivityResources res = getResources(context);
+        // TODO(b/183076074): use R.bool.config_apfDrop802_3Frames directly
+        final int id = res.get().getIdentifier("config_apfDrop802_3Frames", "bool",
+                res.getResourcesContext().getPackageName());
+        return res.get().getBoolean(id);
     }
 
     /**
      * @return An array of denylisted EtherType, packets with EtherTypes within it will be dropped.
      */
     public static @NonNull int[] getApfEtherTypeBlackList() {
-        return Resources.getSystem().getIntArray(R.array.config_apfEthTypeBlackList);
+        // TODO(b/183076074): remove reading resources from system resources
+        final Resources systemRes = Resources.getSystem();
+        final int id = systemRes.getIdentifier("config_apfEthTypeBlackList", "array", "android");
+        return systemRes.getIntArray(id);
+    }
+
+    /**
+     * @return An array of denylisted EtherType, packets with EtherTypes within it will be dropped.
+     * @hide
+     */
+    public static @NonNull int[] getApfEtherTypeDenyList(@NonNull Context context) {
+        final ConnectivityResources res = getResources(context);
+        // TODO(b/183076074): use R.array.config_apfEthTypeDenyList directly
+        final int id = res.get().getIdentifier("config_apfEthTypeDenyList", "array",
+                res.getResourcesContext().getPackageName());
+        return res.get().getIntArray(id);
     }
 }
diff --git a/framework/src/android/net/util/KeepaliveUtils.java b/framework/src/android/net/util/KeepaliveUtils.java
index bfc4563..8d7a0b3 100644
--- a/framework/src/android/net/util/KeepaliveUtils.java
+++ b/framework/src/android/net/util/KeepaliveUtils.java
@@ -19,12 +19,11 @@
 import android.annotation.NonNull;
 import android.content.Context;
 import android.content.res.Resources;
+import android.net.ConnectivityResources;
 import android.net.NetworkCapabilities;
 import android.text.TextUtils;
 import android.util.AndroidRuntimeException;
 
-import com.android.internal.R;
-
 /**
  * Collection of utilities for socket keepalive offload.
  *
@@ -52,8 +51,11 @@
     public static int[] getSupportedKeepalives(@NonNull Context context) {
         String[] res = null;
         try {
-            res = context.getResources().getStringArray(
-                    R.array.config_networkSupportedKeepaliveCount);
+            final ConnectivityResources connRes = new ConnectivityResources(context);
+            // TODO: use R.id.config_networkSupportedKeepaliveCount directly
+            final int id = connRes.get().getIdentifier("config_networkSupportedKeepaliveCount",
+                    "array", connRes.getResourcesContext().getPackageName());
+            res = new ConnectivityResources(context).get().getStringArray(id);
         } catch (Resources.NotFoundException unused) {
         }
         if (res == null) throw new KeepaliveDeviceConfigurationException("invalid resource");
diff --git a/framework/src/android/net/util/MultinetworkPolicyTracker.java b/framework/src/android/net/util/MultinetworkPolicyTracker.java
index 6a49aa2..0b42a00 100644
--- a/framework/src/android/net/util/MultinetworkPolicyTracker.java
+++ b/framework/src/android/net/util/MultinetworkPolicyTracker.java
@@ -27,6 +27,7 @@
 import android.content.IntentFilter;
 import android.content.res.Resources;
 import android.database.ContentObserver;
+import android.net.ConnectivityResources;
 import android.net.Uri;
 import android.os.Handler;
 import android.provider.Settings;
@@ -35,7 +36,6 @@
 import android.telephony.TelephonyManager;
 import android.util.Log;
 
-import com.android.internal.R;
 import com.android.internal.annotations.VisibleForTesting;
 
 import java.util.Arrays;
@@ -64,6 +64,7 @@
     private static String TAG = MultinetworkPolicyTracker.class.getSimpleName();
 
     private final Context mContext;
+    private final ConnectivityResources mResources;
     private final Handler mHandler;
     private final Runnable mAvoidBadWifiCallback;
     private final List<Uri> mSettingsUris;
@@ -107,6 +108,7 @@
 
     public MultinetworkPolicyTracker(Context ctx, Handler handler, Runnable avoidBadWifiCallback) {
         mContext = ctx;
+        mResources = new ConnectivityResources(ctx);
         mHandler = handler;
         mAvoidBadWifiCallback = avoidBadWifiCallback;
         mSettingsUris = Arrays.asList(
@@ -160,12 +162,16 @@
      * Whether the device or carrier configuration disables avoiding bad wifi by default.
      */
     public boolean configRestrictsAvoidBadWifi() {
-        return (getResourcesForActiveSubId().getInteger(R.integer.config_networkAvoidBadWifi) == 0);
+        // TODO: use R.integer.config_networkAvoidBadWifi directly
+        final int id = mResources.get().getIdentifier("config_networkAvoidBadWifi",
+                "integer", mResources.getResourcesContext().getPackageName());
+        return (getResourcesForActiveSubId().getInteger(id) == 0);
     }
 
     @NonNull
     private Resources getResourcesForActiveSubId() {
-        return SubscriptionManager.getResourcesForSubId(mContext, mActiveSubId);
+        return SubscriptionManager.getResourcesForSubId(
+                mResources.getResourcesContext(), mActiveSubId);
     }
 
     /**
@@ -205,8 +211,10 @@
      * The default (device and carrier-dependent) value for metered multipath preference.
      */
     public int configMeteredMultipathPreference() {
-        return mContext.getResources().getInteger(
-                R.integer.config_networkMeteredMultipathPreference);
+        // TODO: use R.integer.config_networkMeteredMultipathPreference directly
+        final int id = mResources.get().getIdentifier("config_networkMeteredMultipathPreference",
+                "integer", mResources.getResourcesContext().getPackageName());
+        return mResources.get().getInteger(id);
     }
 
     public void updateMeteredMultipathPreference() {
diff --git a/service/ServiceConnectivityResources/Android.bp b/service/ServiceConnectivityResources/Android.bp
index f2446b7..fa4501a 100644
--- a/service/ServiceConnectivityResources/Android.bp
+++ b/service/ServiceConnectivityResources/Android.bp
@@ -21,7 +21,7 @@
 
 android_app {
     name: "ServiceConnectivityResources",
-    sdk_version: "system_current",
+    sdk_version: "module_current",
     resource_dirs: [
         "res",
     ],
diff --git a/service/ServiceConnectivityResources/res/values-mcc204-mnc04/config.xml b/service/ServiceConnectivityResources/res/values-mcc204-mnc04/config.xml
new file mode 100644
index 0000000..7e7025f
--- /dev/null
+++ b/service/ServiceConnectivityResources/res/values-mcc204-mnc04/config.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2021 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<!-- Configuration values for ConnectivityService
+     DO NOT EDIT THIS FILE for specific device configuration; instead, use a Runtime Resources
+     Overlay package following the overlayable.xml configuration in the same directory:
+     https://source.android.com/devices/architecture/rros -->
+<resources>
+    <!-- Whether the device should automatically switch away from Wi-Fi networks that lose
+         Internet access. Actual device behaviour is controlled by
+         Settings.Global.NETWORK_AVOID_BAD_WIFI. This is the default value of that setting. -->
+    <integer translatable="false" name="config_networkAvoidBadWifi">0</integer>
+</resources>
\ No newline at end of file
diff --git a/service/ServiceConnectivityResources/res/values-mcc310-mnc004/config.xml b/service/ServiceConnectivityResources/res/values-mcc310-mnc004/config.xml
new file mode 100644
index 0000000..7e7025f
--- /dev/null
+++ b/service/ServiceConnectivityResources/res/values-mcc310-mnc004/config.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2021 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<!-- Configuration values for ConnectivityService
+     DO NOT EDIT THIS FILE for specific device configuration; instead, use a Runtime Resources
+     Overlay package following the overlayable.xml configuration in the same directory:
+     https://source.android.com/devices/architecture/rros -->
+<resources>
+    <!-- Whether the device should automatically switch away from Wi-Fi networks that lose
+         Internet access. Actual device behaviour is controlled by
+         Settings.Global.NETWORK_AVOID_BAD_WIFI. This is the default value of that setting. -->
+    <integer translatable="false" name="config_networkAvoidBadWifi">0</integer>
+</resources>
\ No newline at end of file
diff --git a/service/ServiceConnectivityResources/res/values-mcc311-mnc480/config.xml b/service/ServiceConnectivityResources/res/values-mcc311-mnc480/config.xml
new file mode 100644
index 0000000..7e7025f
--- /dev/null
+++ b/service/ServiceConnectivityResources/res/values-mcc311-mnc480/config.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2021 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<!-- Configuration values for ConnectivityService
+     DO NOT EDIT THIS FILE for specific device configuration; instead, use a Runtime Resources
+     Overlay package following the overlayable.xml configuration in the same directory:
+     https://source.android.com/devices/architecture/rros -->
+<resources>
+    <!-- Whether the device should automatically switch away from Wi-Fi networks that lose
+         Internet access. Actual device behaviour is controlled by
+         Settings.Global.NETWORK_AVOID_BAD_WIFI. This is the default value of that setting. -->
+    <integer translatable="false" name="config_networkAvoidBadWifi">0</integer>
+</resources>
\ No newline at end of file
diff --git a/service/ServiceConnectivityResources/res/values/config.xml b/service/ServiceConnectivityResources/res/values/config.xml
index 06c8192..71674e4 100644
--- a/service/ServiceConnectivityResources/res/values/config.xml
+++ b/service/ServiceConnectivityResources/res/values/config.xml
@@ -52,4 +52,41 @@
         <item>12,60000</item><!-- mobile_cbs -->
     </string-array>
 
-</resources>
\ No newline at end of file
+    <!-- Whether the APF Filter in the device should filter out IEEE 802.3 Frames
+         Those frames are identified by the field Eth-type having values
+         less than 0x600 -->
+    <bool translatable="false" name="config_apfDrop802_3Frames">true</bool>
+
+    <!-- An array of Denylisted EtherType, packets with EtherTypes within this array
+         will be dropped
+         TODO: need to put proper values, these are for testing purposes only -->
+    <integer-array translatable="false" name="config_apfEthTypeDenyList">
+        <item>0x88A2</item>
+        <item>0x88A4</item>
+        <item>0x88B8</item>
+        <item>0x88CD</item>
+        <item>0x88E3</item>
+    </integer-array>
+
+    <!-- Default supported concurrent socket keepalive slots per transport type, used by
+         ConnectivityManager.createSocketKeepalive() for calculating the number of keepalive
+         offload slots that should be reserved for privileged access. This string array should be
+         overridden by the device to present the capability of creating socket keepalives. -->
+    <!-- An Array of "[NetworkCapabilities.TRANSPORT_*],[supported keepalives] -->
+    <string-array translatable="false" name="config_networkSupportedKeepaliveCount">
+        <item>0,1</item>
+        <item>1,3</item>
+    </string-array>
+
+
+    <!-- Default value for ConnectivityManager.getMultipathPreference() on metered networks. Actual
+         device behaviour is controlled by the metered multipath preference in
+         ConnectivitySettingsManager. This is the default value of that setting. -->
+    <integer translatable="false" name="config_networkMeteredMultipathPreference">0</integer>
+
+    <!-- Whether the device should automatically switch away from Wi-Fi networks that lose
+         Internet access. Actual device behaviour is controlled by
+         Settings.Global.NETWORK_AVOID_BAD_WIFI. This is the default value of that setting. -->
+    <integer translatable="false" name="config_networkAvoidBadWifi">1</integer>
+
+</resources>
diff --git a/service/ServiceConnectivityResources/res/values/overlayable.xml b/service/ServiceConnectivityResources/res/values/overlayable.xml
index da8aee5..25e19ce 100644
--- a/service/ServiceConnectivityResources/res/values/overlayable.xml
+++ b/service/ServiceConnectivityResources/res/values/overlayable.xml
@@ -21,6 +21,11 @@
             <item type="string" name="config_networkCaptivePortalServerUrl"/>
             <item type="integer" name="config_networkTransitionTimeout"/>
             <item type="array" name="config_wakeonlan_supported_interfaces"/>
+            <item type="bool" name="config_apfDrop802_3Frames"/>
+            <item type="array" name="config_apfEthTypeDenyList"/>
+            <item type="integer" name="config_networkMeteredMultipathPreference"/>
+            <item type="array" name="config_networkSupportedKeepaliveCount"/>
+            <item type="integer" name="config_networkAvoidBadWifi"/>
 
         </policy>
     </overlayable>