diff --git a/Tethering/common/TetheringLib/Android.bp b/Tethering/common/TetheringLib/Android.bp
index 2f3307a..e2498e4 100644
--- a/Tethering/common/TetheringLib/Android.bp
+++ b/Tethering/common/TetheringLib/Android.bp
@@ -33,6 +33,10 @@
 
         // Using for test only
         "//cts/tests/netlegacy22.api",
+
+        // TODO: b/374174952 Remove it when VCN CTS is moved to Connectivity/
+        "//cts/tests/tests/vcn",
+
         "//external/sl4a:__subpackages__",
         "//frameworks/base/core/tests/bandwidthtests",
         "//frameworks/base/core/tests/benchmarks",
diff --git a/Tethering/common/TetheringLib/api/module-lib-current.txt b/Tethering/common/TetheringLib/api/module-lib-current.txt
index 460c216..e893894 100644
--- a/Tethering/common/TetheringLib/api/module-lib-current.txt
+++ b/Tethering/common/TetheringLib/api/module-lib-current.txt
@@ -46,5 +46,10 @@
     method @Deprecated @NonNull public java.util.List<java.lang.String> getTetherableWifiRegexs();
   }
 
+  public static final class TetheringManager.TetheringRequest implements android.os.Parcelable {
+    method @FlaggedApi("com.android.net.flags.tethering_with_soft_ap_config") @Nullable public String getPackageName();
+    method @FlaggedApi("com.android.net.flags.tethering_with_soft_ap_config") public int getUid();
+  }
+
 }
 
diff --git a/Tethering/common/TetheringLib/api/system-current.txt b/Tethering/common/TetheringLib/api/system-current.txt
index 3efaac2..0e85956 100644
--- a/Tethering/common/TetheringLib/api/system-current.txt
+++ b/Tethering/common/TetheringLib/api/system-current.txt
@@ -21,8 +21,10 @@
 
   public final class TetheringInterface implements android.os.Parcelable {
     ctor public TetheringInterface(int, @NonNull String);
+    ctor @FlaggedApi("com.android.net.flags.tethering_with_soft_ap_config") public TetheringInterface(int, @NonNull String, @Nullable android.net.wifi.SoftApConfiguration);
     method public int describeContents();
     method @NonNull public String getInterface();
+    method @FlaggedApi("com.android.net.flags.tethering_with_soft_ap_config") @Nullable @RequiresPermission(value=android.Manifest.permission.NETWORK_SETTINGS, conditional=true) public android.net.wifi.SoftApConfiguration getSoftApConfiguration();
     method public int getType();
     method public void writeToParcel(@NonNull android.os.Parcel, int);
     field @NonNull public static final android.os.Parcelable.Creator<android.net.TetheringInterface> CREATOR;
@@ -97,16 +99,16 @@
   }
 
   public static final class TetheringManager.TetheringRequest implements android.os.Parcelable {
-    method @FlaggedApi("com.android.net.flags.tethering_request_with_soft_ap_config") public int describeContents();
+    method @FlaggedApi("com.android.net.flags.tethering_with_soft_ap_config") public int describeContents();
     method @Nullable public android.net.LinkAddress getClientStaticIpv4Address();
     method public int getConnectivityScope();
     method @Nullable public android.net.LinkAddress getLocalIpv4Address();
     method public boolean getShouldShowEntitlementUi();
-    method @FlaggedApi("com.android.net.flags.tethering_request_with_soft_ap_config") @Nullable public android.net.wifi.SoftApConfiguration getSoftApConfiguration();
+    method @FlaggedApi("com.android.net.flags.tethering_with_soft_ap_config") @Nullable public android.net.wifi.SoftApConfiguration getSoftApConfiguration();
     method public int getTetheringType();
     method public boolean isExemptFromEntitlementCheck();
-    method @FlaggedApi("com.android.net.flags.tethering_request_with_soft_ap_config") public void writeToParcel(@NonNull android.os.Parcel, int);
-    field @FlaggedApi("com.android.net.flags.tethering_request_with_soft_ap_config") @NonNull public static final android.os.Parcelable.Creator<android.net.TetheringManager.TetheringRequest> CREATOR;
+    method @FlaggedApi("com.android.net.flags.tethering_with_soft_ap_config") public void writeToParcel(@NonNull android.os.Parcel, int);
+    field @FlaggedApi("com.android.net.flags.tethering_with_soft_ap_config") @NonNull public static final android.os.Parcelable.Creator<android.net.TetheringManager.TetheringRequest> CREATOR;
   }
 
   public static class TetheringManager.TetheringRequest.Builder {
@@ -115,7 +117,7 @@
     method @NonNull @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public android.net.TetheringManager.TetheringRequest.Builder setConnectivityScope(int);
     method @NonNull @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public android.net.TetheringManager.TetheringRequest.Builder setExemptFromEntitlementCheck(boolean);
     method @NonNull @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public android.net.TetheringManager.TetheringRequest.Builder setShouldShowEntitlementUi(boolean);
-    method @FlaggedApi("com.android.net.flags.tethering_request_with_soft_ap_config") @NonNull @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public android.net.TetheringManager.TetheringRequest.Builder setSoftApConfiguration(@Nullable android.net.wifi.SoftApConfiguration);
+    method @FlaggedApi("com.android.net.flags.tethering_with_soft_ap_config") @NonNull @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public android.net.TetheringManager.TetheringRequest.Builder setSoftApConfiguration(@Nullable android.net.wifi.SoftApConfiguration);
     method @NonNull @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public android.net.TetheringManager.TetheringRequest.Builder setStaticIpv4Addresses(@NonNull android.net.LinkAddress, @NonNull android.net.LinkAddress);
   }
 
diff --git a/Tethering/common/TetheringLib/src/android/net/TetheringInterface.java b/Tethering/common/TetheringLib/src/android/net/TetheringInterface.java
index 84cdef1..0464fe0 100644
--- a/Tethering/common/TetheringLib/src/android/net/TetheringInterface.java
+++ b/Tethering/common/TetheringLib/src/android/net/TetheringInterface.java
@@ -16,13 +16,19 @@
 
 package android.net;
 
+import android.annotation.FlaggedApi;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.RequiresPermission;
+import android.annotation.SuppressLint;
 import android.annotation.SystemApi;
 import android.net.TetheringManager.TetheringType;
+import android.net.wifi.SoftApConfiguration;
 import android.os.Parcel;
 import android.os.Parcelable;
 
+import com.android.net.flags.Flags;
+
 import java.util.Objects;
 
 /**
@@ -33,15 +39,21 @@
 public final class TetheringInterface implements Parcelable {
     private final int mType;
     private final String mInterface;
+    @Nullable
+    private final SoftApConfiguration mSoftApConfig;
 
+    @SuppressLint("UnflaggedApi")
     public TetheringInterface(@TetheringType int type, @NonNull String iface) {
+        this(type, iface, null);
+    }
+
+    @FlaggedApi(Flags.FLAG_TETHERING_WITH_SOFT_AP_CONFIG)
+    public TetheringInterface(@TetheringType int type, @NonNull String iface,
+            @Nullable SoftApConfiguration softApConfig) {
         Objects.requireNonNull(iface);
         mType = type;
         mInterface = iface;
-    }
-
-    private TetheringInterface(@NonNull Parcel in) {
-        this(in.readInt(), in.readString());
+        mSoftApConfig = softApConfig;
     }
 
     /** Get tethering type. */
@@ -55,22 +67,36 @@
         return mInterface;
     }
 
+    /**
+     * Get the SoftApConfiguration provided for this interface, if any. This will only be populated
+     * for apps with the same uid that specified the configuration, or apps with permission
+     * {@link android.Manifest.permission.NETWORK_SETTINGS}.
+     */
+    @FlaggedApi(Flags.FLAG_TETHERING_WITH_SOFT_AP_CONFIG)
+    @RequiresPermission(value = android.Manifest.permission.NETWORK_SETTINGS, conditional = true)
+    @Nullable
+    public SoftApConfiguration getSoftApConfiguration() {
+        return mSoftApConfig;
+    }
+
     @Override
     public void writeToParcel(@NonNull Parcel dest, int flags) {
         dest.writeInt(mType);
         dest.writeString(mInterface);
+        dest.writeParcelable(mSoftApConfig, flags);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(mType, mInterface);
+        return Objects.hash(mType, mInterface, mSoftApConfig);
     }
 
     @Override
     public boolean equals(@Nullable Object obj) {
         if (!(obj instanceof TetheringInterface)) return false;
         final TetheringInterface other = (TetheringInterface) obj;
-        return mType == other.mType && mInterface.equals(other.mInterface);
+        return mType == other.mType && mInterface.equals(other.mInterface)
+                && Objects.equals(mSoftApConfig, other.mSoftApConfig);
     }
 
     @Override
@@ -82,8 +108,10 @@
     public static final Creator<TetheringInterface> CREATOR = new Creator<TetheringInterface>() {
         @NonNull
         @Override
+        @SuppressLint("UnflaggedApi")
         public TetheringInterface createFromParcel(@NonNull Parcel in) {
-            return new TetheringInterface(in);
+            return new TetheringInterface(in.readInt(), in.readString(),
+                    in.readParcelable(SoftApConfiguration.class.getClassLoader()));
         }
 
         @NonNull
@@ -97,6 +125,8 @@
     @Override
     public String toString() {
         return "TetheringInterface {mType=" + mType
-                + ", mInterface=" + mInterface + "}";
+                + ", mInterface=" + mInterface
+                + ((mSoftApConfig == null) ? "" : ", mSoftApConfig=" + mSoftApConfig)
+                + "}";
     }
 }
diff --git a/Tethering/common/TetheringLib/src/android/net/TetheringManager.java b/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
index 411971d..bc771da 100644
--- a/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
+++ b/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
@@ -33,6 +33,7 @@
 import android.os.IBinder;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.os.Process;
 import android.os.RemoteException;
 import android.os.ResultReceiver;
 import android.util.ArrayMap;
@@ -53,6 +54,7 @@
 import java.util.List;
 import java.util.Objects;
 import java.util.Set;
+import java.util.StringJoiner;
 import java.util.concurrent.Executor;
 import java.util.function.Supplier;
 
@@ -207,6 +209,20 @@
      */
     public static final int MAX_TETHERING_TYPE = TETHERING_VIRTUAL;
 
+    private static String typeToString(@TetheringType int type) {
+        switch (type) {
+            case TETHERING_INVALID: return "TETHERING_INVALID";
+            case TETHERING_WIFI: return "TETHERING_WIFI";
+            case TETHERING_USB: return "TETHERING_USB";
+            case TETHERING_BLUETOOTH: return "TETHERING_BLUETOOTH";
+            case TETHERING_WIFI_P2P: return "TETHERING_WIFI_P2P";
+            case TETHERING_NCM: return "TETHERING_NCM";
+            case TETHERING_ETHERNET: return "TETHERING_ETHERNET";
+            default:
+                return "TETHERING_UNKNOWN(" + type + ")";
+        }
+    }
+
     /** @hide */
     @Retention(RetentionPolicy.SOURCE)
     @IntDef(value = {
@@ -688,6 +704,17 @@
     })
     public @interface ConnectivityScope {}
 
+    private static String connectivityScopeToString(@ConnectivityScope int scope) {
+        switch (scope) {
+            case CONNECTIVITY_SCOPE_GLOBAL:
+                return "CONNECTIVITY_SCOPE_GLOBAL";
+            case CONNECTIVITY_SCOPE_LOCAL:
+                return "CONNECTIVITY_SCOPE_LOCAL";
+            default:
+                return "CONNECTIVITY_SCOPE_UNKNOWN(" + scope + ")";
+        }
+    }
+
     /**
      *  Use with {@link #startTethering} to specify additional parameters when starting tethering.
      */
@@ -698,7 +725,7 @@
         /**
          * @hide
          */
-        @FlaggedApi(Flags.FLAG_TETHERING_REQUEST_WITH_SOFT_AP_CONFIG)
+        @FlaggedApi(Flags.FLAG_TETHERING_WITH_SOFT_AP_CONFIG)
         public TetheringRequest(@NonNull final TetheringRequestParcel request) {
             mRequestParcel = request;
         }
@@ -707,7 +734,7 @@
             mRequestParcel = in.readParcelable(TetheringRequestParcel.class.getClassLoader());
         }
 
-        @FlaggedApi(Flags.FLAG_TETHERING_REQUEST_WITH_SOFT_AP_CONFIG)
+        @FlaggedApi(Flags.FLAG_TETHERING_WITH_SOFT_AP_CONFIG)
         @NonNull
         public static final Creator<TetheringRequest> CREATOR = new Creator<>() {
             @Override
@@ -721,13 +748,13 @@
             }
         };
 
-        @FlaggedApi(Flags.FLAG_TETHERING_REQUEST_WITH_SOFT_AP_CONFIG)
+        @FlaggedApi(Flags.FLAG_TETHERING_WITH_SOFT_AP_CONFIG)
         @Override
         public int describeContents() {
             return 0;
         }
 
-        @FlaggedApi(Flags.FLAG_TETHERING_REQUEST_WITH_SOFT_AP_CONFIG)
+        @FlaggedApi(Flags.FLAG_TETHERING_WITH_SOFT_AP_CONFIG)
         @Override
         public void writeToParcel(@NonNull Parcel dest, int flags) {
             dest.writeParcelable(mRequestParcel, flags);
@@ -746,6 +773,7 @@
                 mBuilderParcel.exemptFromEntitlementCheck = false;
                 mBuilderParcel.showProvisioningUi = true;
                 mBuilderParcel.connectivityScope = getDefaultConnectivityScope(type);
+                mBuilderParcel.uid = Process.INVALID_UID;
                 mBuilderParcel.softApConfig = null;
             }
 
@@ -818,7 +846,7 @@
              * @param softApConfig SoftApConfiguration to use.
              * @throws IllegalArgumentException if the tethering type isn't TETHERING_WIFI.
              */
-            @FlaggedApi(Flags.FLAG_TETHERING_REQUEST_WITH_SOFT_AP_CONFIG)
+            @FlaggedApi(Flags.FLAG_TETHERING_WITH_SOFT_AP_CONFIG)
             @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED)
             @NonNull
             public Builder setSoftApConfiguration(@Nullable SoftApConfiguration softApConfig) {
@@ -913,13 +941,54 @@
         /**
          * Get the desired SoftApConfiguration of the request, if one was specified.
          */
-        @FlaggedApi(Flags.FLAG_TETHERING_REQUEST_WITH_SOFT_AP_CONFIG)
+        @FlaggedApi(Flags.FLAG_TETHERING_WITH_SOFT_AP_CONFIG)
         @Nullable
         public SoftApConfiguration getSoftApConfiguration() {
             return mRequestParcel.softApConfig;
         }
 
         /**
+         * Sets the UID of the app that sent this request. This should always be overridden when
+         * receiving TetheringRequest from an external source.
+         * @hide
+         */
+        public void setUid(int uid) {
+            mRequestParcel.uid = uid;
+        }
+
+        /**
+         * Sets the package name of the app that sent this request. This should always be overridden
+         * when receiving a TetheringRequest from an external source.
+         * @hide
+         */
+        public void setPackageName(String packageName) {
+            mRequestParcel.packageName = packageName;
+        }
+
+        /**
+         * Gets the UID of the app that sent this request. This defaults to
+         * {@link Process#INVALID_UID} if unset.
+         * @hide
+         */
+        @FlaggedApi(Flags.FLAG_TETHERING_WITH_SOFT_AP_CONFIG)
+        @SystemApi(client = MODULE_LIBRARIES)
+        public int getUid() {
+            return mRequestParcel.uid;
+        }
+
+        /**
+         * Gets the package name of the app that sent this request. This defaults to {@code null} if
+         * unset.
+         * @hide
+         */
+        @FlaggedApi(Flags.FLAG_TETHERING_WITH_SOFT_AP_CONFIG)
+        @SystemApi(client = MODULE_LIBRARIES)
+        @Nullable
+        public String getPackageName() {
+            return mRequestParcel.packageName;
+        }
+
+        /**
          * Get a TetheringRequestParcel from the configuration
          * @hide
          */
@@ -929,13 +998,31 @@
 
         /** String of TetheringRequest detail. */
         public String toString() {
-            return "TetheringRequest [ type= " + mRequestParcel.tetheringType
-                    + ", localIPv4Address= " + mRequestParcel.localIPv4Address
-                    + ", staticClientAddress= " + mRequestParcel.staticClientAddress
-                    + ", exemptFromEntitlementCheck= " + mRequestParcel.exemptFromEntitlementCheck
-                    + ", showProvisioningUi= " + mRequestParcel.showProvisioningUi
-                    + ", softApConfig= " + mRequestParcel.softApConfig
-                    + " ]";
+            StringJoiner sj = new StringJoiner(", ", "TetheringRequest[ ", " ]");
+            sj.add(typeToString(mRequestParcel.tetheringType));
+            if (mRequestParcel.localIPv4Address != null) {
+                sj.add("localIpv4Address=" + mRequestParcel.localIPv4Address);
+            }
+            if (mRequestParcel.staticClientAddress != null) {
+                sj.add("staticClientAddress=" + mRequestParcel.staticClientAddress);
+            }
+            if (mRequestParcel.exemptFromEntitlementCheck) {
+                sj.add("exemptFromEntitlementCheck");
+            }
+            if (mRequestParcel.showProvisioningUi) {
+                sj.add("showProvisioningUi");
+            }
+            sj.add(connectivityScopeToString(mRequestParcel.connectivityScope));
+            if (mRequestParcel.softApConfig != null) {
+                sj.add("softApConfig=" + mRequestParcel.softApConfig);
+            }
+            if (mRequestParcel.uid != Process.INVALID_UID) {
+                sj.add("uid=" + mRequestParcel.uid);
+            }
+            if (mRequestParcel.packageName != null) {
+                sj.add("packageName=" + mRequestParcel.packageName);
+            }
+            return sj.toString();
         }
 
         @Override
@@ -950,7 +1037,9 @@
                     && parcel.exemptFromEntitlementCheck == otherParcel.exemptFromEntitlementCheck
                     && parcel.showProvisioningUi == otherParcel.showProvisioningUi
                     && parcel.connectivityScope == otherParcel.connectivityScope
-                    && Objects.equals(parcel.softApConfig, otherParcel.softApConfig);
+                    && Objects.equals(parcel.softApConfig, otherParcel.softApConfig)
+                    && parcel.uid == otherParcel.uid
+                    && Objects.equals(parcel.packageName, otherParcel.packageName);
         }
 
         @Override
@@ -958,7 +1047,8 @@
             TetheringRequestParcel parcel = getParcel();
             return Objects.hash(parcel.tetheringType, parcel.localIPv4Address,
                     parcel.staticClientAddress, parcel.exemptFromEntitlementCheck,
-                    parcel.showProvisioningUi, parcel.connectivityScope, parcel.softApConfig);
+                    parcel.showProvisioningUi, parcel.connectivityScope, parcel.softApConfig,
+                    parcel.uid, parcel.packageName);
         }
     }
 
diff --git a/Tethering/common/TetheringLib/src/android/net/TetheringRequestParcel.aidl b/Tethering/common/TetheringLib/src/android/net/TetheringRequestParcel.aidl
index ea7a353..789d5bb 100644
--- a/Tethering/common/TetheringLib/src/android/net/TetheringRequestParcel.aidl
+++ b/Tethering/common/TetheringLib/src/android/net/TetheringRequestParcel.aidl
@@ -31,4 +31,6 @@
     boolean showProvisioningUi;
     int connectivityScope;
     SoftApConfiguration softApConfig;
+    int uid;
+    String packageName;
 }
diff --git a/Tethering/src/android/net/ip/IpServer.java b/Tethering/src/android/net/ip/IpServer.java
index a0604f2..ebc9e4e 100644
--- a/Tethering/src/android/net/ip/IpServer.java
+++ b/Tethering/src/android/net/ip/IpServer.java
@@ -69,8 +69,8 @@
 import com.android.internal.util.MessageUtils;
 import com.android.internal.util.State;
 import com.android.modules.utils.build.SdkLevel;
-import com.android.net.module.util.InterfaceParams;
 import com.android.net.module.util.IIpv4PrefixRequest;
+import com.android.net.module.util.InterfaceParams;
 import com.android.net.module.util.NetdUtils;
 import com.android.net.module.util.RoutingCoordinatorManager;
 import com.android.net.module.util.SharedLog;
@@ -168,10 +168,10 @@
         /**
          * Request Tethering change.
          *
-         * @param tetheringType the downstream type of this IpServer.
+         * @param request the TetheringRequest this IpServer was enabled with.
          * @param enabled enable or disable tethering.
          */
-        public void requestEnableTethering(int tetheringType, boolean enabled) { }
+        public void requestEnableTethering(TetheringRequest request, boolean enabled) { }
     }
 
     /** Capture IpServer dependencies, for injection. */
@@ -293,6 +293,9 @@
 
     private LinkAddress mIpv4Address;
 
+    @Nullable
+    private TetheringRequest mTetheringRequest;
+
     private final TetheringMetrics mTetheringMetrics;
     private final Handler mHandler;
 
@@ -406,6 +409,12 @@
         return mIpv4PrefixRequest;
     }
 
+    /** The TetheringRequest the IpServer started with. */
+    @Nullable
+    public TetheringRequest getTetheringRequest() {
+        return mTetheringRequest;
+    }
+
     /**
      * Get the latest list of DHCP leases that was reported. Must be called on the IpServer looper
      * thread.
@@ -1033,6 +1042,7 @@
             switch (message.what) {
                 case CMD_TETHER_REQUESTED:
                     mLastError = TETHER_ERROR_NO_ERROR;
+                    mTetheringRequest = (TetheringRequest) message.obj;
                     switch (message.arg1) {
                         case STATE_LOCAL_ONLY:
                             maybeConfigureStaticIp((TetheringRequest) message.obj);
@@ -1168,8 +1178,8 @@
                     handleNewPrefixRequest((IpPrefix) message.obj);
                     break;
                 case CMD_NOTIFY_PREFIX_CONFLICT:
-                    mLog.i("restart tethering: " + mInterfaceType);
-                    mCallback.requestEnableTethering(mInterfaceType, false /* enabled */);
+                    mLog.i("restart tethering: " + mIfaceName);
+                    mCallback.requestEnableTethering(mTetheringRequest, false /* enabled */);
                     transitionTo(mWaitingForRestartState);
                     break;
                 case CMD_SERVICE_FAILED_TO_START:
@@ -1453,12 +1463,12 @@
                 case CMD_TETHER_UNREQUESTED:
                     transitionTo(mInitialState);
                     mLog.i("Untethered (unrequested) and restarting " + mIfaceName);
-                    mCallback.requestEnableTethering(mInterfaceType, true /* enabled */);
+                    mCallback.requestEnableTethering(mTetheringRequest, true /* enabled */);
                     break;
                 case CMD_INTERFACE_DOWN:
                     transitionTo(mUnavailableState);
                     mLog.i("Untethered (interface down) and restarting " + mIfaceName);
-                    mCallback.requestEnableTethering(mInterfaceType, true /* enabled */);
+                    mCallback.requestEnableTethering(mTetheringRequest, true /* enabled */);
                     break;
                 default:
                     return false;
diff --git a/Tethering/src/com/android/networkstack/tethering/Tethering.java b/Tethering/src/com/android/networkstack/tethering/Tethering.java
index df255f3..f33ef37 100644
--- a/Tethering/src/com/android/networkstack/tethering/Tethering.java
+++ b/Tethering/src/com/android/networkstack/tethering/Tethering.java
@@ -109,6 +109,7 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
+import android.os.Process;
 import android.os.RemoteCallbackList;
 import android.os.RemoteException;
 import android.os.ResultReceiver;
@@ -216,10 +217,12 @@
      * Cookie added when registering {@link android.net.TetheringManager.TetheringEventCallback}.
      */
     private static class CallbackCookie {
-        public final boolean hasListClientsPermission;
+        public final int uid;
+        public final boolean hasSystemPrivilege;
 
-        private CallbackCookie(boolean hasListClientsPermission) {
-            this.hasListClientsPermission = hasListClientsPermission;
+        private CallbackCookie(int uid, boolean hasSystemPrivilege) {
+            this.uid = uid;
+            this.hasSystemPrivilege = hasSystemPrivilege;
         }
     }
 
@@ -263,7 +266,6 @@
     private boolean mRndisEnabled;       // track the RNDIS function enabled state
     private boolean mNcmEnabled;         // track the NCM function enabled state
     private Network mTetherUpstream;
-    private TetherStatesParcel mTetherStatesParcel;
     private boolean mDataSaverEnabled = false;
     private String mWifiP2pTetherInterface = null;
     private int mOffloadStatus = TETHER_HARDWARE_OFFLOAD_STOPPED;
@@ -1091,21 +1093,55 @@
     }
 
     // TODO: Figure out how to update for local hotspot mode interfaces.
-    private void sendTetherStateChangedBroadcast() {
+    private void notifyTetherStatesChanged() {
         if (!isTetheringSupported()) return;
 
+        sendTetherStatesChangedCallback();
+        sendTetherStatesChangedBroadcast();
+
+        int downstreamTypesMask = DOWNSTREAM_NONE;
+        for (int i = 0; i < mTetherStates.size(); i++) {
+            final TetherState tetherState = mTetherStates.valueAt(i);
+            final int type = tetherState.ipServer.interfaceType();
+            if (tetherState.lastState != IpServer.STATE_TETHERED) continue;
+            switch (type) {
+                case TETHERING_USB:
+                case TETHERING_WIFI:
+                case TETHERING_BLUETOOTH:
+                    downstreamTypesMask |= (1 << type);
+                    break;
+                default:
+                    // Do nothing.
+                    break;
+            }
+        }
+        mNotificationUpdater.onDownstreamChanged(downstreamTypesMask);
+    }
+
+    /**
+     * Builds a TetherStatesParcel for the specified CallbackCookie. SoftApConfiguration will only
+     * be included if the cookie has the same uid as the app that specified the configuration, or
+     * if the cookie has system privilege.
+     *
+     * @param cookie CallbackCookie of the receiving app.
+     * @return TetherStatesParcel with information redacted for the specified cookie.
+     */
+    private TetherStatesParcel buildTetherStatesParcel(CallbackCookie cookie) {
         final ArrayList<TetheringInterface> available = new ArrayList<>();
         final ArrayList<TetheringInterface> tethered = new ArrayList<>();
         final ArrayList<TetheringInterface> localOnly = new ArrayList<>();
         final ArrayList<TetheringInterface> errored = new ArrayList<>();
         final ArrayList<Integer> lastErrors = new ArrayList<>();
 
-        int downstreamTypesMask = DOWNSTREAM_NONE;
         for (int i = 0; i < mTetherStates.size(); i++) {
             final TetherState tetherState = mTetherStates.valueAt(i);
             final int type = tetherState.ipServer.interfaceType();
             final String iface = mTetherStates.keyAt(i);
-            final TetheringInterface tetheringIface = new TetheringInterface(type, iface);
+            final TetheringRequest request = tetherState.ipServer.getTetheringRequest();
+            final boolean includeSoftApConfig = request != null && cookie != null
+                    && (cookie.uid == request.getUid() || cookie.hasSystemPrivilege);
+            final TetheringInterface tetheringIface = new TetheringInterface(type, iface,
+                    includeSoftApConfig ? request.getSoftApConfiguration() : null);
             if (tetherState.lastError != TETHER_ERROR_NO_ERROR) {
                 errored.add(tetheringIface);
                 lastErrors.add(tetherState.lastError);
@@ -1118,41 +1154,16 @@
                     case TETHERING_USB:
                     case TETHERING_WIFI:
                     case TETHERING_BLUETOOTH:
-                        downstreamTypesMask |= (1 << type);
                         break;
                     default:
                         // Do nothing.
+                        break;
                 }
                 tethered.add(tetheringIface);
             }
         }
 
-        mTetherStatesParcel = buildTetherStatesParcel(available, localOnly, tethered, errored,
-                lastErrors);
-        reportTetherStateChanged(mTetherStatesParcel);
-
-        mContext.sendStickyBroadcastAsUser(buildStateChangeIntent(available, localOnly, tethered,
-                errored), UserHandle.ALL);
-        if (DBG) {
-            Log.d(TAG, String.format(
-                    "reportTetherStateChanged %s=[%s] %s=[%s] %s=[%s] %s=[%s]",
-                    "avail", TextUtils.join(",", available),
-                    "local_only", TextUtils.join(",", localOnly),
-                    "tether", TextUtils.join(",", tethered),
-                    "error", TextUtils.join(",", errored)));
-        }
-
-        mNotificationUpdater.onDownstreamChanged(downstreamTypesMask);
-    }
-
-    private TetherStatesParcel buildTetherStatesParcel(
-            final ArrayList<TetheringInterface> available,
-            final ArrayList<TetheringInterface> localOnly,
-            final ArrayList<TetheringInterface> tethered,
-            final ArrayList<TetheringInterface> errored,
-            final ArrayList<Integer> lastErrors) {
         final TetherStatesParcel parcel = new TetherStatesParcel();
-
         parcel.availableList = available.toArray(new TetheringInterface[0]);
         parcel.tetheredList = tethered.toArray(new TetheringInterface[0]);
         parcel.localOnlyList = localOnly.toArray(new TetheringInterface[0]);
@@ -1161,23 +1172,23 @@
         for (int i = 0; i < lastErrors.size(); i++) {
             parcel.lastErrorList[i] = lastErrors.get(i);
         }
-
         return parcel;
     }
 
-    private Intent buildStateChangeIntent(final ArrayList<TetheringInterface> available,
-            final ArrayList<TetheringInterface> localOnly,
-            final ArrayList<TetheringInterface> tethered,
-            final ArrayList<TetheringInterface> errored) {
+    private void sendTetherStatesChangedBroadcast() {
         final Intent bcast = new Intent(ACTION_TETHER_STATE_CHANGED);
         bcast.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
 
-        bcast.putStringArrayListExtra(EXTRA_AVAILABLE_TETHER, toIfaces(available));
-        bcast.putStringArrayListExtra(EXTRA_ACTIVE_LOCAL_ONLY, toIfaces(localOnly));
-        bcast.putStringArrayListExtra(EXTRA_ACTIVE_TETHER, toIfaces(tethered));
-        bcast.putStringArrayListExtra(EXTRA_ERRORED_TETHER, toIfaces(errored));
-
-        return bcast;
+        TetherStatesParcel parcel = buildTetherStatesParcel(null /* cookie */);
+        bcast.putStringArrayListExtra(
+                EXTRA_AVAILABLE_TETHER, toIfaces(Arrays.asList(parcel.availableList)));
+        bcast.putStringArrayListExtra(
+                EXTRA_ACTIVE_LOCAL_ONLY, toIfaces(Arrays.asList(parcel.localOnlyList)));
+        bcast.putStringArrayListExtra(
+                EXTRA_ACTIVE_TETHER, toIfaces(Arrays.asList(parcel.tetheredList)));
+        bcast.putStringArrayListExtra(
+                EXTRA_ERRORED_TETHER, toIfaces(Arrays.asList(parcel.erroredIfaceList)));
+        mContext.sendStickyBroadcastAsUser(bcast, UserHandle.ALL);
     }
 
     private class StateReceiver extends BroadcastReceiver {
@@ -2192,9 +2203,9 @@
                         break;
                     }
                     case EVENT_REQUEST_CHANGE_DOWNSTREAM: {
-                        final int tetheringType = message.arg1;
-                        final Boolean enabled = (Boolean) message.obj;
-                        enableTetheringInternal(tetheringType, enabled, null);
+                        final boolean enabled = message.arg1 == 1;
+                        final TetheringRequest request = (TetheringRequest) message.obj;
+                        enableTetheringInternal(request.getTetheringType(), enabled, null);
                         break;
                     }
                     default:
@@ -2391,19 +2402,19 @@
 
     /** Register tethering event callback */
     void registerTetheringEventCallback(ITetheringEventCallback callback) {
-        final boolean hasListPermission =
-                hasCallingPermission(NETWORK_SETTINGS)
-                        || hasCallingPermission(PERMISSION_MAINLINE_NETWORK_STACK)
-                        || hasCallingPermission(NETWORK_STACK);
+        final int uid = mDeps.getBinderCallingUid();
+        final boolean hasSystemPrivilege = hasCallingPermission(NETWORK_SETTINGS)
+                || hasCallingPermission(PERMISSION_MAINLINE_NETWORK_STACK)
+                || hasCallingPermission(NETWORK_STACK);
         mHandler.post(() -> {
-            mTetheringEventCallbacks.register(callback, new CallbackCookie(hasListPermission));
+            CallbackCookie cookie = new CallbackCookie(uid, hasSystemPrivilege);
+            mTetheringEventCallbacks.register(callback, cookie);
             final TetheringCallbackStartedParcel parcel = new TetheringCallbackStartedParcel();
             parcel.supportedTypes = mSupportedTypeBitmap;
             parcel.upstreamNetwork = mTetherUpstream;
             parcel.config = mConfig.toStableParcelable();
-            parcel.states =
-                    mTetherStatesParcel != null ? mTetherStatesParcel : emptyTetherStatesParcel();
-            parcel.tetheredClients = hasListPermission
+            parcel.states = buildTetherStatesParcel(cookie);
+            parcel.tetheredClients = hasSystemPrivilege
                     ? mConnectedClientsTracker.getLastTetheredClients()
                     : Collections.emptyList();
             parcel.offloadStatus = mOffloadStatus;
@@ -2415,17 +2426,6 @@
         });
     }
 
-    private TetherStatesParcel emptyTetherStatesParcel() {
-        final TetherStatesParcel parcel = new TetherStatesParcel();
-        parcel.availableList = new TetheringInterface[0];
-        parcel.tetheredList = new TetheringInterface[0];
-        parcel.localOnlyList = new TetheringInterface[0];
-        parcel.erroredIfaceList = new TetheringInterface[0];
-        parcel.lastErrorList = new int[0];
-
-        return parcel;
-    }
-
     private boolean hasCallingPermission(@NonNull String permission) {
         return mContext.checkCallingOrSelfPermission(permission) == PERMISSION_GRANTED;
     }
@@ -2484,12 +2484,14 @@
         }
     }
 
-    private void reportTetherStateChanged(TetherStatesParcel states) {
+    private void sendTetherStatesChangedCallback() {
         final int length = mTetheringEventCallbacks.beginBroadcast();
         try {
             for (int i = 0; i < length; i++) {
                 try {
-                    mTetheringEventCallbacks.getBroadcastItem(i).onTetherStatesChanged(states);
+                    TetherStatesParcel parcel = buildTetherStatesParcel(
+                            (CallbackCookie) mTetheringEventCallbacks.getBroadcastCookie(i));
+                    mTetheringEventCallbacks.getBroadcastItem(i).onTetherStatesChanged(parcel);
                 } catch (RemoteException e) {
                     // Not really very much to do here.
                 }
@@ -2497,6 +2499,18 @@
         } finally {
             mTetheringEventCallbacks.finishBroadcast();
         }
+
+        if (DBG) {
+            // Use a CallbackCookie with system privilege so nothing is redacted.
+            TetherStatesParcel parcel = buildTetherStatesParcel(
+                    new CallbackCookie(Process.SYSTEM_UID, true /* hasSystemPrivilege */));
+            Log.d(TAG, String.format(
+                    "sendTetherStatesChangedCallback %s=[%s] %s=[%s] %s=[%s] %s=[%s]",
+                    "avail", TextUtils.join(",", Arrays.asList(parcel.availableList)),
+                    "local_only", TextUtils.join(",", Arrays.asList(parcel.localOnlyList)),
+                    "tether", TextUtils.join(",", Arrays.asList(parcel.tetheredList)),
+                    "error", TextUtils.join(",", Arrays.asList(parcel.erroredIfaceList))));
+        }
     }
 
     private void reportTetherClientsChanged(List<TetheredClient> clients) {
@@ -2506,7 +2520,7 @@
                 try {
                     final CallbackCookie cookie =
                             (CallbackCookie) mTetheringEventCallbacks.getBroadcastCookie(i);
-                    if (!cookie.hasListClientsPermission) continue;
+                    if (!cookie.hasSystemPrivilege) continue;
                     mTetheringEventCallbacks.getBroadcastItem(i).onTetherClientsChanged(clients);
                 } catch (RemoteException e) {
                     // Not really very much to do here.
@@ -2741,7 +2755,7 @@
                     return;
             }
             mTetherMainSM.sendMessage(which, state, 0, who);
-            sendTetherStateChangedBroadcast();
+            notifyTetherStatesChanged();
         }
 
         @Override
@@ -2769,9 +2783,9 @@
         }
 
         @Override
-        public void requestEnableTethering(int tetheringType, boolean enabled) {
+        public void requestEnableTethering(TetheringRequest request, boolean enabled) {
             mTetherMainSM.sendMessage(TetherMainSM.EVENT_REQUEST_CHANGE_DOWNSTREAM,
-                    tetheringType, 0, enabled ? Boolean.TRUE : Boolean.FALSE);
+                    enabled ? 1 : 0, 0, request);
         }
     }
 
diff --git a/Tethering/src/com/android/networkstack/tethering/TetheringDependencies.java b/Tethering/src/com/android/networkstack/tethering/TetheringDependencies.java
index a4823ca..d89bf4d 100644
--- a/Tethering/src/com/android/networkstack/tethering/TetheringDependencies.java
+++ b/Tethering/src/com/android/networkstack/tethering/TetheringDependencies.java
@@ -25,6 +25,7 @@
 import android.net.INetd;
 import android.net.connectivity.ConnectivityInternalApiUtil;
 import android.net.ip.IpServer;
+import android.os.Binder;
 import android.os.Build;
 import android.os.Handler;
 import android.os.IBinder;
@@ -36,7 +37,6 @@
 import androidx.annotation.RequiresApi;
 
 import com.android.modules.utils.build.SdkLevel;
-import com.android.net.module.util.PrivateAddressCoordinator;
 import com.android.net.module.util.RoutingCoordinatorManager;
 import com.android.net.module.util.RoutingCoordinatorService;
 import com.android.net.module.util.SharedLog;
@@ -201,4 +201,11 @@
     public WearableConnectionManager makeWearableConnectionManager(Context ctx) {
         return new WearableConnectionManager(ctx);
     }
+
+    /**
+     * Wrapper to get the binder calling uid for unit testing.
+     */
+    public int getBinderCallingUid() {
+        return Binder.getCallingUid();
+    }
 }
diff --git a/Tethering/src/com/android/networkstack/tethering/TetheringNotificationUpdater.java b/Tethering/src/com/android/networkstack/tethering/TetheringNotificationUpdater.java
index a0198cc..a29f0c2 100644
--- a/Tethering/src/com/android/networkstack/tethering/TetheringNotificationUpdater.java
+++ b/Tethering/src/com/android/networkstack/tethering/TetheringNotificationUpdater.java
@@ -85,7 +85,6 @@
     static final int ROAMING_NOTIFICATION_ID = 1003;
     @VisibleForTesting
     static final int NO_ICON_ID = 0;
-    @VisibleForTesting
     static final int DOWNSTREAM_NONE = 0;
     // Refer to TelephonyManager#getSimCarrierId for more details about carrier id.
     @VisibleForTesting
diff --git a/Tethering/src/com/android/networkstack/tethering/TetheringService.java b/Tethering/src/com/android/networkstack/tethering/TetheringService.java
index 454cbf1..3cb5f99 100644
--- a/Tethering/src/com/android/networkstack/tethering/TetheringService.java
+++ b/Tethering/src/com/android/networkstack/tethering/TetheringService.java
@@ -28,6 +28,7 @@
 import static android.net.TetheringManager.TETHER_ERROR_UNSUPPORTED;
 import static android.net.dhcp.IDhcpServer.STATUS_UNKNOWN_ERROR;
 
+import android.app.AppOpsManager;
 import android.app.Service;
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothManager;
@@ -138,8 +139,10 @@
                     listener)) {
                 return;
             }
-            // TODO(b/216524590): Add UID/packageName of caller to TetheringRequest here
-            mTethering.startTethering(new TetheringRequest(request), callerPkg, listener);
+            TetheringRequest external = new TetheringRequest(request);
+            external.setUid(getBinderCallingUid());
+            external.setPackageName(callerPkg);
+            mTethering.startTethering(external, callerPkg, listener);
         }
 
         @Override
@@ -238,6 +241,12 @@
                 final String callingAttributionTag, final boolean onlyAllowPrivileged,
                 final IIntResultListener listener) {
             try {
+                if (!checkPackageNameMatchesUid(getBinderCallingUid(), callerPkg)) {
+                    Log.e(TAG, "Package name " + callerPkg + " does not match UID "
+                            + getBinderCallingUid());
+                    listener.onResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
+                    return true;
+                }
                 if (!hasTetherChangePermission(callerPkg, callingAttributionTag,
                         onlyAllowPrivileged)) {
                     listener.onResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
@@ -256,6 +265,12 @@
 
         private boolean checkAndNotifyCommonError(final String callerPkg,
                 final String callingAttributionTag, final ResultReceiver receiver) {
+            if (!checkPackageNameMatchesUid(getBinderCallingUid(), callerPkg)) {
+                Log.e(TAG, "Package name " + callerPkg + " does not match UID "
+                        + getBinderCallingUid());
+                receiver.send(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION, null);
+                return true;
+            }
             if (!hasTetherChangePermission(callerPkg, callingAttributionTag,
                     false /* onlyAllowPrivileged */)) {
                 receiver.send(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION, null);
@@ -290,9 +305,9 @@
 
             if (mTethering.isTetherProvisioningRequired()) return false;
 
-            int uid = Binder.getCallingUid();
+            int uid = getBinderCallingUid();
 
-            // If callerPkg's uid is not same as Binder.getCallingUid(),
+            // If callerPkg's uid is not same as getBinderCallingUid(),
             // checkAndNoteWriteSettingsOperation will return false and the operation will be
             // denied.
             return mService.checkAndNoteWriteSettingsOperation(mService, uid, callerPkg,
@@ -305,6 +320,14 @@
             return mService.checkCallingOrSelfPermission(
                     ACCESS_NETWORK_STATE) == PERMISSION_GRANTED;
         }
+
+        private int getBinderCallingUid() {
+            return mService.getBinderCallingUid();
+        }
+
+        private boolean checkPackageNameMatchesUid(final int uid, final String callerPkg) {
+            return mService.checkPackageNameMatchesUid(mService, uid, callerPkg);
+        }
     }
 
     /**
@@ -322,6 +345,32 @@
     }
 
     /**
+     * Check if the package name matches the uid.
+     */
+    @VisibleForTesting
+    boolean checkPackageNameMatchesUid(@NonNull Context context, int uid,
+            @NonNull String callingPackage) {
+        try {
+            final AppOpsManager mAppOps = context.getSystemService(AppOpsManager.class);
+            if (mAppOps == null) {
+                return false;
+            }
+            mAppOps.checkPackage(uid, callingPackage);
+        } catch (SecurityException e) {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Wrapper for the Binder calling UID, used for mocks.
+     */
+    @VisibleForTesting
+    int getBinderCallingUid() {
+        return Binder.getCallingUid();
+    }
+
+    /**
      * An injection method for testing.
      */
     @VisibleForTesting
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/MockTetheringService.java b/Tethering/tests/unit/src/com/android/networkstack/tethering/MockTetheringService.java
index 3c07580..7fcc5f1 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/MockTetheringService.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/MockTetheringService.java
@@ -32,6 +32,8 @@
 public class MockTetheringService extends TetheringService {
     private final Tethering mTethering = mock(Tethering.class);
     private final ArrayMap<String, Integer> mMockedPermissions = new ArrayMap<>();
+    private final ArrayMap<String, Integer> mMockedPackageUids = new ArrayMap<>();
+    private int mMockCallingUid;
 
     @Override
     public IBinder onBind(Intent intent) {
@@ -61,6 +63,17 @@
         return super.checkCallingOrSelfPermission(permission);
     }
 
+    @Override
+    boolean checkPackageNameMatchesUid(@NonNull Context context, int uid,
+            @NonNull String callingPackage) {
+        return mMockedPackageUids.getOrDefault(callingPackage, 0) == uid;
+    }
+
+    @Override
+    int getBinderCallingUid() {
+        return mMockCallingUid;
+    }
+
     public Tethering getTethering() {
         return mTethering;
     }
@@ -91,5 +104,19 @@
                 mMockedPermissions.put(permission, granted);
             }
         }
+
+        /**
+         * Mock a package name matching a uid.
+         */
+        public void setPackageNameUid(String packageName, int uid) {
+            mMockedPackageUids.put(packageName, uid);
+        }
+
+        /**
+         * Mock a package name matching a uid.
+         */
+        public void setCallingUid(int uid) {
+            mMockCallingUid = uid;
+        }
     }
 }
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringServiceTest.java b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringServiceTest.java
index c0d7ad4..0dbf772 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringServiceTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringServiceTest.java
@@ -33,12 +33,16 @@
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.anyInt;
 import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.reset;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.verifyNoMoreInteractions;
 import static org.mockito.Mockito.when;
 
+import android.app.AppOpsManager;
 import android.app.UiAutomation;
 import android.content.Intent;
 import android.net.IIntResultListener;
@@ -79,7 +83,9 @@
 public final class TetheringServiceTest {
     private static final String TEST_IFACE_NAME = "test_wlan0";
     private static final String TEST_CALLER_PKG = "com.android.shell";
+    private static final int TEST_CALLER_UID = 1234;
     private static final String TEST_ATTRIBUTION_TAG = null;
+    private static final String TEST_WRONG_PACKAGE = "wrong.package";
     @Mock private ITetheringEventCallback mITetheringEventCallback;
     @Rule public ServiceTestRule mServiceTestRule;
     private Tethering mTethering;
@@ -87,6 +93,7 @@
     private MockTetheringConnector mMockConnector;
     private ITetheringConnector mTetheringConnector;
     private UiAutomation mUiAutomation;
+    @Mock private AppOpsManager mAppOps;
 
     private class TestTetheringResult extends IIntResultListener.Stub {
         private int mResult = -1; // Default value that does not match any result code.
@@ -128,6 +135,10 @@
         mTetheringConnector = ITetheringConnector.Stub.asInterface(mMockConnector.getIBinder());
         final MockTetheringService service = mMockConnector.getService();
         mTethering = service.getTethering();
+        mMockConnector.setCallingUid(TEST_CALLER_UID);
+        mMockConnector.setPackageNameUid(TEST_CALLER_PKG, TEST_CALLER_UID);
+        doThrow(new SecurityException()).when(mAppOps).checkPackage(anyInt(),
+                eq(TEST_WRONG_PACKAGE));
     }
 
     @After
@@ -330,6 +341,15 @@
         });
 
         runAsTetherPrivileged((result) -> {
+            mTetheringConnector.startTethering(request, TEST_WRONG_PACKAGE,
+                    TEST_ATTRIBUTION_TAG, result);
+            verify(mTethering, never()).startTethering(
+                    eq(new TetheringRequest(request)), eq(TEST_WRONG_PACKAGE), eq(result));
+            result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
+            verifyNoMoreInteractionsForTethering();
+        });
+
+        runAsTetherPrivileged((result) -> {
             runStartTethering(result, request);
             verifyNoMoreInteractionsForTethering();
         });
@@ -445,6 +465,13 @@
             verifyNoMoreInteractionsForTethering();
         });
 
+        runAsTetherPrivileged((none) -> {
+            mTetheringConnector.requestLatestTetheringEntitlementResult(TETHERING_WIFI, result,
+                    true /* showEntitlementUi */, TEST_WRONG_PACKAGE, TEST_ATTRIBUTION_TAG);
+            result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
+            verifyNoMoreInteractions(mTethering);
+        });
+
         runAsWriteSettings((none) -> {
             runRequestLatestTetheringEntitlementResult();
             verify(mTethering).isTetherProvisioningRequired();
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
index d0c036f..17f5081 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
@@ -17,7 +17,10 @@
 package com.android.networkstack.tethering;
 
 import static android.Manifest.permission.NETWORK_SETTINGS;
+import static android.Manifest.permission.NETWORK_STACK;
 import static android.content.pm.PackageManager.GET_ACTIVITIES;
+import static android.content.pm.PackageManager.PERMISSION_DENIED;
+import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 import static android.hardware.usb.UsbManager.USB_CONFIGURED;
 import static android.hardware.usb.UsbManager.USB_CONNECTED;
 import static android.hardware.usb.UsbManager.USB_FUNCTION_NCM;
@@ -33,6 +36,7 @@
 import static android.net.NetworkCapabilities.TRANSPORT_BLUETOOTH;
 import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
+import static android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK;
 import static android.net.RouteInfo.RTN_UNICAST;
 import static android.net.TetheringManager.ACTION_TETHER_STATE_CHANGED;
 import static android.net.TetheringManager.CONNECTIVITY_SCOPE_GLOBAL;
@@ -164,6 +168,7 @@
 import android.net.wifi.WifiClient;
 import android.net.wifi.WifiManager;
 import android.net.wifi.WifiManager.SoftApCallback;
+import android.net.wifi.WifiSsid;
 import android.net.wifi.p2p.WifiP2pGroup;
 import android.net.wifi.p2p.WifiP2pInfo;
 import android.net.wifi.p2p.WifiP2pManager;
@@ -190,6 +195,7 @@
 
 import com.android.internal.util.test.BroadcastInterceptingContext;
 import com.android.internal.util.test.FakeSettingsProvider;
+import com.android.modules.utils.build.SdkLevel;
 import com.android.net.module.util.CollectionUtils;
 import com.android.net.module.util.InterfaceParams;
 import com.android.net.module.util.PrivateAddressCoordinator;
@@ -223,6 +229,7 @@
 import java.io.PrintWriter;
 import java.net.Inet4Address;
 import java.net.Inet6Address;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -257,6 +264,7 @@
     private static final String TEST_WIFI_REGEX = "test_wlan\\d";
     private static final String TEST_P2P_REGEX = "test_p2p-p2p\\d-.*";
     private static final String TEST_BT_REGEX = "test_pan\\d";
+    private static final int TEST_CALLER_UID = 1000;
     private static final String TEST_CALLER_PKG = "com.test.tethering";
 
     private static final int CELLULAR_NETID = 100;
@@ -328,6 +336,7 @@
 
     private TestConnectivityManager mCm;
     private boolean mForceEthernetServiceUnavailable = false;
+    private int mBinderCallingUid = TEST_CALLER_UID;
 
     private class TestContext extends BroadcastInterceptingContext {
         TestContext(Context base) {
@@ -555,6 +564,11 @@
             }
             return mBluetoothPanShim;
         }
+
+        @Override
+        public int getBinderCallingUid() {
+            return mBinderCallingUid;
+        }
     }
 
     private static LinkProperties buildUpstreamLinkProperties(String interfaceName,
@@ -2335,7 +2349,7 @@
         // 2. Enable wifi tethering.
         UpstreamNetworkState upstreamState = buildMobileDualStackUpstreamState();
         initTetheringUpstream(upstreamState);
-        when(mWifiManager.startTetheredHotspot(any(SoftApConfiguration.class))).thenReturn(true);
+        when(mWifiManager.startTetheredHotspot(null)).thenReturn(true);
         mTethering.interfaceStatusChanged(TEST_WLAN_IFNAME, true);
         mLooper.dispatchAll();
         tetherState = callback.pollTetherStatesChanged();
@@ -2380,6 +2394,105 @@
     }
 
     @Test
+    public void testSoftApConfigInTetheringEventCallback() throws Exception {
+        assumeTrue(SdkLevel.isAtLeastV());
+        when(mContext.checkCallingOrSelfPermission(NETWORK_SETTINGS))
+                .thenReturn(PERMISSION_DENIED);
+        when(mContext.checkCallingOrSelfPermission(NETWORK_STACK))
+                .thenReturn(PERMISSION_DENIED);
+        when(mContext.checkCallingOrSelfPermission(PERMISSION_MAINLINE_NETWORK_STACK))
+                .thenReturn(PERMISSION_DENIED);
+        initTetheringOnTestThread();
+        TestTetheringEventCallback callback = new TestTetheringEventCallback();
+        TestTetheringEventCallback differentCallback = new TestTetheringEventCallback();
+        TestTetheringEventCallback settingsCallback = new TestTetheringEventCallback();
+        SoftApConfiguration softApConfig = new SoftApConfiguration.Builder().setWifiSsid(
+                WifiSsid.fromBytes("SoftApConfig".getBytes(StandardCharsets.UTF_8))).build();
+        final TetheringRequest tetheringRequest = new TetheringRequest.Builder(TETHERING_WIFI)
+                .setSoftApConfiguration(softApConfig).build();
+        tetheringRequest.setUid(TEST_CALLER_UID);
+        final TetheringInterface wifiIfaceWithoutConfig = new TetheringInterface(
+                TETHERING_WIFI, TEST_WLAN_IFNAME, null);
+        final TetheringInterface wifiIfaceWithConfig = new TetheringInterface(
+                TETHERING_WIFI, TEST_WLAN_IFNAME, softApConfig);
+
+        // Register callback before running any tethering.
+        mTethering.registerTetheringEventCallback(callback);
+        mLooper.dispatchAll();
+        callback.expectTetheredClientChanged(Collections.emptyList());
+        callback.expectUpstreamChanged(NULL_NETWORK);
+        callback.expectConfigurationChanged(
+                mTethering.getTetheringConfiguration().toStableParcelable());
+        // Register callback with different UID
+        mBinderCallingUid = TEST_CALLER_UID + 1;
+        mTethering.registerTetheringEventCallback(differentCallback);
+        mLooper.dispatchAll();
+        differentCallback.expectTetheredClientChanged(Collections.emptyList());
+        differentCallback.expectUpstreamChanged(NULL_NETWORK);
+        differentCallback.expectConfigurationChanged(
+                mTethering.getTetheringConfiguration().toStableParcelable());
+        // Register Settings callback
+        when(mContext.checkCallingOrSelfPermission(NETWORK_SETTINGS))
+                .thenReturn(PERMISSION_GRANTED);
+        mTethering.registerTetheringEventCallback(settingsCallback);
+        mLooper.dispatchAll();
+        settingsCallback.expectTetheredClientChanged(Collections.emptyList());
+        settingsCallback.expectUpstreamChanged(NULL_NETWORK);
+        settingsCallback.expectConfigurationChanged(
+                mTethering.getTetheringConfiguration().toStableParcelable());
+
+        assertTetherStatesNotNullButEmpty(callback.pollTetherStatesChanged());
+        assertTetherStatesNotNullButEmpty(differentCallback.pollTetherStatesChanged());
+        assertTetherStatesNotNullButEmpty(settingsCallback.pollTetherStatesChanged());
+        callback.expectOffloadStatusChanged(TETHER_HARDWARE_OFFLOAD_STOPPED);
+        UpstreamNetworkState upstreamState = buildMobileDualStackUpstreamState();
+        initTetheringUpstream(upstreamState);
+        when(mWifiManager.startTetheredHotspot(null)).thenReturn(true);
+        mTethering.interfaceStatusChanged(TEST_WLAN_IFNAME, true);
+        mLooper.dispatchAll();
+        assertArrayEquals(new TetheringInterface[] {wifiIfaceWithoutConfig},
+                callback.pollTetherStatesChanged().availableList);
+        assertArrayEquals(new TetheringInterface[] {wifiIfaceWithoutConfig},
+                differentCallback.pollTetherStatesChanged().availableList);
+        assertArrayEquals(new TetheringInterface[] {wifiIfaceWithoutConfig},
+                settingsCallback.pollTetherStatesChanged().availableList);
+
+        // Enable wifi tethering
+        mBinderCallingUid = TEST_CALLER_UID;
+        mTethering.startTethering(tetheringRequest, TEST_CALLER_PKG, null);
+        sendWifiApStateChanged(WIFI_AP_STATE_ENABLED, TEST_WLAN_IFNAME, IFACE_IP_MODE_TETHERED);
+        assertArrayEquals(new TetheringInterface[] {wifiIfaceWithConfig},
+                callback.pollTetherStatesChanged().tetheredList);
+        assertArrayEquals(new TetheringInterface[] {wifiIfaceWithoutConfig},
+                differentCallback.pollTetherStatesChanged().tetheredList);
+        assertArrayEquals(new TetheringInterface[] {wifiIfaceWithConfig},
+                settingsCallback.pollTetherStatesChanged().tetheredList);
+        callback.expectUpstreamChanged(upstreamState.network);
+        callback.expectOffloadStatusChanged(TETHER_HARDWARE_OFFLOAD_STARTED);
+
+        // Disable wifi tethering
+        mLooper.dispatchAll();
+        mTethering.stopTethering(TETHERING_WIFI);
+        sendWifiApStateChanged(WIFI_AP_STATE_DISABLED);
+        if (isAtLeastT()) {
+            // After T, tethering doesn't support WIFI_AP_STATE_DISABLED with null interface name.
+            callback.assertNoStateChangeCallback();
+            sendWifiApStateChanged(WIFI_AP_STATE_DISABLED, TEST_WLAN_IFNAME,
+                    IFACE_IP_MODE_TETHERED);
+        }
+        assertArrayEquals(new TetheringInterface[] {wifiIfaceWithConfig},
+                callback.pollTetherStatesChanged().availableList);
+        assertArrayEquals(new TetheringInterface[] {wifiIfaceWithoutConfig},
+                differentCallback.pollTetherStatesChanged().availableList);
+        assertArrayEquals(new TetheringInterface[] {wifiIfaceWithConfig},
+                settingsCallback.pollTetherStatesChanged().availableList);
+        mLooper.dispatchAll();
+        callback.expectUpstreamChanged(NULL_NETWORK);
+        callback.expectOffloadStatusChanged(TETHER_HARDWARE_OFFLOAD_STOPPED);
+        callback.assertNoCallback();
+    }
+
+    @Test
     public void testReportFailCallbackIfOffloadNotSupported() throws Exception {
         initTetheringOnTestThread();
         final UpstreamNetworkState upstreamState = buildMobileDualStackUpstreamState();
diff --git a/bpf/headers/include/bpf/BpfClassic.h b/bpf/headers/include/bpf/BpfClassic.h
index 81be37d..e6cef89 100644
--- a/bpf/headers/include/bpf/BpfClassic.h
+++ b/bpf/headers/include/bpf/BpfClassic.h
@@ -63,6 +63,10 @@
 #define BPF_LOAD_SKB_PROTOCOL \
 	BPF_STMT(BPF_LD | BPF_H | BPF_ABS, (__u32)SKF_AD_OFF + SKF_AD_PROTOCOL)
 
+// loads skb->pkt_type (0..7: see uapi/linux/if_packet.h PACKET_* constants)
+#define BPF_LOAD_SKB_PKTTYPE \
+	BPF_STMT(BPF_LD | BPF_B | BPF_ABS, (__u32)SKF_AD_OFF + SKF_AD_PKTTYPE)
+
 // 8-bit load relative to start of link layer (mac/ethernet) header.
 #define BPF_LOAD_MAC_RELATIVE_U8(ofs) \
 	BPF_STMT(BPF_LD | BPF_B | BPF_ABS, (__u32)SKF_LL_OFF + (ofs))
@@ -160,6 +164,9 @@
 #define BPF_LOAD_NETX_RELATIVE_ICMP_TYPE BPF_LOAD_NETX_RELATIVE_L4_U8(0)
 #define BPF_LOAD_NETX_RELATIVE_ICMP_CODE BPF_LOAD_NETX_RELATIVE_L4_U8(1)
 
+// IGMP start with u8 type
+#define BPF_LOAD_NETX_RELATIVE_IGMP_TYPE BPF_LOAD_NETX_RELATIVE_L4_U8(0)
+
 // IPv6 extension headers (HOPOPTS, DSTOPS, FRAG) begin with a u8 nexthdr
 #define BPF_LOAD_NETX_RELATIVE_V6EXTHDR_NEXTHDR BPF_LOAD_NETX_RELATIVE_L4_U8(0)
 
diff --git a/bpf/headers/include/bpf/BpfRingbuf.h b/bpf/headers/include/bpf/BpfRingbuf.h
index 4bcd259..5fe4ef7 100644
--- a/bpf/headers/include/bpf/BpfRingbuf.h
+++ b/bpf/headers/include/bpf/BpfRingbuf.h
@@ -99,6 +99,7 @@
   // 32-bit kernel will just ignore the high-order bits.
   std::atomic_uint64_t* mConsumerPos = nullptr;
   std::atomic_uint32_t* mProducerPos = nullptr;
+  std::atomic_uint32_t* mLength = nullptr;
 
   // In order to guarantee atomic access in a 32 bit userspace environment, atomic_uint64_t is used
   // in addition to std::atomic<T>::is_always_lock_free that guarantees that read / write operations
@@ -247,7 +248,8 @@
     //   u32 len;
     //   u32 pg_off;
     // };
-    uint32_t length = *reinterpret_cast<volatile uint32_t*>(start_ptr);
+    mLength = reinterpret_cast<decltype(mLength)>(start_ptr);
+    uint32_t length = mLength->load(std::memory_order_acquire);
 
     // If the sample isn't committed, we're caught up with the producer.
     if (length & BPF_RINGBUF_BUSY_BIT) return count;
diff --git a/bpf/netd/Android.bp b/bpf/netd/Android.bp
index fe4d999..473c8c9 100644
--- a/bpf/netd/Android.bp
+++ b/bpf/netd/Android.bp
@@ -82,7 +82,6 @@
         "libcutils",
         "liblog",
         "libnetdutils",
-        "libprocessgroup",
     ],
     compile_multilib: "both",
     multilib: {
diff --git a/bpf/netd/BpfBaseTest.cpp b/bpf/netd/BpfBaseTest.cpp
index 34dfbb4..4b8a04e 100644
--- a/bpf/netd/BpfBaseTest.cpp
+++ b/bpf/netd/BpfBaseTest.cpp
@@ -29,7 +29,6 @@
 #include <gtest/gtest.h>
 
 #include <cutils/qtaguid.h>
-#include <processgroup/processgroup.h>
 
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
@@ -54,13 +53,6 @@
     BpfBasicTest() {}
 };
 
-TEST_F(BpfBasicTest, TestCgroupMounted) {
-    std::string cg2_path;
-    ASSERT_EQ(true, CgroupGetControllerPath(CGROUPV2_HIERARCHY_NAME, &cg2_path));
-    ASSERT_EQ(0, access(cg2_path.c_str(), R_OK));
-    ASSERT_EQ(0, access((cg2_path + "/cgroup.controllers").c_str(), R_OK));
-}
-
 TEST_F(BpfBasicTest, TestTagSocket) {
     BpfMap<uint64_t, UidTagValue> cookieTagMap(COOKIE_TAG_MAP_PATH);
     ASSERT_TRUE(cookieTagMap.isValid());
diff --git a/bpf/netd/BpfHandler.cpp b/bpf/netd/BpfHandler.cpp
index 50e0329..340acda 100644
--- a/bpf/netd/BpfHandler.cpp
+++ b/bpf/netd/BpfHandler.cpp
@@ -97,6 +97,7 @@
         ALOGE("Failed to open the cgroup directory: %s", strerror(err));
         return statusFromErrno(err, "Open the cgroup directory failed");
     }
+
     RETURN_IF_NOT_OK(checkProgramAccessible(XT_BPF_ALLOWLIST_PROG_PATH));
     RETURN_IF_NOT_OK(checkProgramAccessible(XT_BPF_DENYLIST_PROG_PATH));
     RETURN_IF_NOT_OK(checkProgramAccessible(XT_BPF_EGRESS_PROG_PATH));
diff --git a/bpf/syscall_wrappers/include/BpfSyscallWrappers.h b/bpf/syscall_wrappers/include/BpfSyscallWrappers.h
index 73cef89..a31445a 100644
--- a/bpf/syscall_wrappers/include/BpfSyscallWrappers.h
+++ b/bpf/syscall_wrappers/include/BpfSyscallWrappers.h
@@ -16,24 +16,20 @@
 
 #pragma once
 
+#include <android-base/unique_fd.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <linux/bpf.h>
 #include <linux/unistd.h>
 #include <sys/file.h>
 
-#ifdef BPF_FD_JUST_USE_INT
-  #define BPF_FD_TYPE int
-  #define BPF_FD_TO_U32(x) static_cast<__u32>(x)
-#else
-  #include <android-base/unique_fd.h>
-  #define BPF_FD_TYPE base::unique_fd&
-  #define BPF_FD_TO_U32(x) static_cast<__u32>((x).get())
-#endif
 
 namespace android {
 namespace bpf {
 
+using ::android::base::borrowed_fd;
+using ::android::base::unique_fd;
+
 inline uint64_t ptr_to_u64(const void * const x) {
     return (uint64_t)(uintptr_t)x;
 }
@@ -69,58 +65,59 @@
 //   'inner_map_fd' is basically a template specifying {map_type, key_size, value_size, max_entries, map_flags}
 //   of the inner map type (and possibly only key_size/value_size actually matter?).
 inline int createOuterMap(bpf_map_type map_type, uint32_t key_size, uint32_t value_size,
-                          uint32_t max_entries, uint32_t map_flags, const BPF_FD_TYPE inner_map_fd) {
+                          uint32_t max_entries, uint32_t map_flags,
+                          const borrowed_fd& inner_map_fd) {
     return bpf(BPF_MAP_CREATE, {
                                        .map_type = map_type,
                                        .key_size = key_size,
                                        .value_size = value_size,
                                        .max_entries = max_entries,
                                        .map_flags = map_flags,
-                                       .inner_map_fd = BPF_FD_TO_U32(inner_map_fd),
+                                       .inner_map_fd = static_cast<__u32>(inner_map_fd.get()),
                                });
 }
 
-inline int writeToMapEntry(const BPF_FD_TYPE map_fd, const void* key, const void* value,
+inline int writeToMapEntry(const borrowed_fd& map_fd, const void* key, const void* value,
                            uint64_t flags) {
     return bpf(BPF_MAP_UPDATE_ELEM, {
-                                            .map_fd = BPF_FD_TO_U32(map_fd),
+                                            .map_fd = static_cast<__u32>(map_fd.get()),
                                             .key = ptr_to_u64(key),
                                             .value = ptr_to_u64(value),
                                             .flags = flags,
                                     });
 }
 
-inline int findMapEntry(const BPF_FD_TYPE map_fd, const void* key, void* value) {
+inline int findMapEntry(const borrowed_fd& map_fd, const void* key, void* value) {
     return bpf(BPF_MAP_LOOKUP_ELEM, {
-                                            .map_fd = BPF_FD_TO_U32(map_fd),
+                                            .map_fd = static_cast<__u32>(map_fd.get()),
                                             .key = ptr_to_u64(key),
                                             .value = ptr_to_u64(value),
                                     });
 }
 
-inline int deleteMapEntry(const BPF_FD_TYPE map_fd, const void* key) {
+inline int deleteMapEntry(const borrowed_fd& map_fd, const void* key) {
     return bpf(BPF_MAP_DELETE_ELEM, {
-                                            .map_fd = BPF_FD_TO_U32(map_fd),
+                                            .map_fd = static_cast<__u32>(map_fd.get()),
                                             .key = ptr_to_u64(key),
                                     });
 }
 
-inline int getNextMapKey(const BPF_FD_TYPE map_fd, const void* key, void* next_key) {
+inline int getNextMapKey(const borrowed_fd& map_fd, const void* key, void* next_key) {
     return bpf(BPF_MAP_GET_NEXT_KEY, {
-                                             .map_fd = BPF_FD_TO_U32(map_fd),
+                                             .map_fd = static_cast<__u32>(map_fd.get()),
                                              .key = ptr_to_u64(key),
                                              .next_key = ptr_to_u64(next_key),
                                      });
 }
 
-inline int getFirstMapKey(const BPF_FD_TYPE map_fd, void* firstKey) {
+inline int getFirstMapKey(const borrowed_fd& map_fd, void* firstKey) {
     return getNextMapKey(map_fd, NULL, firstKey);
 }
 
-inline int bpfFdPin(const BPF_FD_TYPE map_fd, const char* pathname) {
+inline int bpfFdPin(const borrowed_fd& map_fd, const char* pathname) {
     return bpf(BPF_OBJ_PIN, {
                                     .pathname = ptr_to_u64(pathname),
-                                    .bpf_fd = BPF_FD_TO_U32(map_fd),
+                                    .bpf_fd = static_cast<__u32>(map_fd.get()),
                             });
 }
 
@@ -131,22 +128,15 @@
                             });
 }
 
-int bpfGetFdMapId(const BPF_FD_TYPE map_fd);
+int bpfGetFdMapId(const borrowed_fd& map_fd);
 
 inline int bpfLock(int fd, short type) {
     if (fd < 0) return fd;  // pass any errors straight through
 #ifdef BPF_MAP_LOCKLESS_FOR_TEST
     return fd;
 #endif
-#ifdef BPF_FD_JUST_USE_INT
     int mapId = bpfGetFdMapId(fd);
     int saved_errno = errno;
-#else
-    base::unique_fd ufd(fd);
-    int mapId = bpfGetFdMapId(ufd);
-    int saved_errno = errno;
-    (void)ufd.release();
-#endif
     // 4.14+ required to fetch map id, but we don't want to call isAtLeastKernelVersion
     if (mapId == -1 && saved_errno == EINVAL) return fd;
     if (mapId <= 0) abort();  // should not be possible
@@ -193,37 +183,35 @@
 }
 
 inline bool usableProgram(const char* pathname) {
-    int fd = retrieveProgram(pathname);
-    bool ok = (fd >= 0);
-    if (ok) close(fd);
-    return ok;
+    unique_fd fd(retrieveProgram(pathname));
+    return fd.ok();
 }
 
-inline int attachProgram(bpf_attach_type type, const BPF_FD_TYPE prog_fd,
-                         const BPF_FD_TYPE cg_fd, uint32_t flags = 0) {
+inline int attachProgram(bpf_attach_type type, const borrowed_fd& prog_fd,
+                         const borrowed_fd& cg_fd, uint32_t flags = 0) {
     return bpf(BPF_PROG_ATTACH, {
-                                        .target_fd = BPF_FD_TO_U32(cg_fd),
-                                        .attach_bpf_fd = BPF_FD_TO_U32(prog_fd),
+                                        .target_fd = static_cast<__u32>(cg_fd.get()),
+                                        .attach_bpf_fd = static_cast<__u32>(prog_fd.get()),
                                         .attach_type = type,
                                         .attach_flags = flags,
                                 });
 }
 
-inline int detachProgram(bpf_attach_type type, const BPF_FD_TYPE cg_fd) {
+inline int detachProgram(bpf_attach_type type, const borrowed_fd& cg_fd) {
     return bpf(BPF_PROG_DETACH, {
-                                        .target_fd = BPF_FD_TO_U32(cg_fd),
+                                        .target_fd = static_cast<__u32>(cg_fd.get()),
                                         .attach_type = type,
                                 });
 }
 
-inline int queryProgram(const BPF_FD_TYPE cg_fd,
+inline int queryProgram(const borrowed_fd& cg_fd,
                         enum bpf_attach_type attach_type,
                         __u32 query_flags = 0,
                         __u32 attach_flags = 0) {
     int prog_id = -1;  // equivalent to an array of one integer.
     bpf_attr arg = {
             .query = {
-                    .target_fd = BPF_FD_TO_U32(cg_fd),
+                    .target_fd = static_cast<__u32>(cg_fd.get()),
                     .attach_type = attach_type,
                     .query_flags = query_flags,
                     .attach_flags = attach_flags,
@@ -237,21 +225,21 @@
     return prog_id;  // return actual id
 }
 
-inline int detachSingleProgram(bpf_attach_type type, const BPF_FD_TYPE prog_fd,
-                               const BPF_FD_TYPE cg_fd) {
+inline int detachSingleProgram(bpf_attach_type type, const borrowed_fd& prog_fd,
+                               const borrowed_fd& cg_fd) {
     return bpf(BPF_PROG_DETACH, {
-                                        .target_fd = BPF_FD_TO_U32(cg_fd),
-                                        .attach_bpf_fd = BPF_FD_TO_U32(prog_fd),
+                                        .target_fd = static_cast<__u32>(cg_fd.get()),
+                                        .attach_bpf_fd = static_cast<__u32>(prog_fd.get()),
                                         .attach_type = type,
                                 });
 }
 
 // Available in 4.12 and later kernels.
-inline int runProgram(const BPF_FD_TYPE prog_fd, const void* data,
+inline int runProgram(const borrowed_fd& prog_fd, const void* data,
                       const uint32_t data_size) {
     return bpf(BPF_PROG_RUN, {
                                      .test = {
-                                             .prog_fd = BPF_FD_TO_U32(prog_fd),
+                                             .prog_fd = static_cast<__u32>(prog_fd.get()),
                                              .data_size_in = data_size,
                                              .data_in = ptr_to_u64(data),
                                      },
@@ -265,10 +253,10 @@
 // supported/returned by the running kernel.  We do this by checking it is fully
 // within the bounds of the struct size as reported by the kernel.
 #define DEFINE_BPF_GET_FD(TYPE, NAME, FIELD) \
-inline int bpfGetFd ## NAME(const BPF_FD_TYPE fd) { \
+inline int bpfGetFd ## NAME(const borrowed_fd& fd) { \
     struct bpf_ ## TYPE ## _info info = {}; \
     union bpf_attr attr = { .info = { \
-        .bpf_fd = BPF_FD_TO_U32(fd), \
+        .bpf_fd = static_cast<__u32>(fd.get()), \
         .info_len = sizeof(info), \
         .info = ptr_to_u64(&info), \
     }}; \
@@ -283,19 +271,16 @@
 
 // All 7 of these fields are already present in Linux v4.14 (even ACK 4.14-P)
 // while BPF_OBJ_GET_INFO_BY_FD is not implemented at all in v4.9 (even ACK 4.9-Q)
-DEFINE_BPF_GET_FD(map, MapType, type)            // int bpfGetFdMapType(const BPF_FD_TYPE map_fd)
-DEFINE_BPF_GET_FD(map, MapId, id)                // int bpfGetFdMapId(const BPF_FD_TYPE map_fd)
-DEFINE_BPF_GET_FD(map, KeySize, key_size)        // int bpfGetFdKeySize(const BPF_FD_TYPE map_fd)
-DEFINE_BPF_GET_FD(map, ValueSize, value_size)    // int bpfGetFdValueSize(const BPF_FD_TYPE map_fd)
-DEFINE_BPF_GET_FD(map, MaxEntries, max_entries)  // int bpfGetFdMaxEntries(const BPF_FD_TYPE map_fd)
-DEFINE_BPF_GET_FD(map, MapFlags, map_flags)      // int bpfGetFdMapFlags(const BPF_FD_TYPE map_fd)
-DEFINE_BPF_GET_FD(prog, ProgId, id)              // int bpfGetFdProgId(const BPF_FD_TYPE prog_fd)
+DEFINE_BPF_GET_FD(map, MapType, type)            // int bpfGetFdMapType(const borrowed_fd& map_fd)
+DEFINE_BPF_GET_FD(map, MapId, id)                // int bpfGetFdMapId(const borrowed_fd& map_fd)
+DEFINE_BPF_GET_FD(map, KeySize, key_size)        // int bpfGetFdKeySize(const borrowed_fd& map_fd)
+DEFINE_BPF_GET_FD(map, ValueSize, value_size)    // int bpfGetFdValueSize(const borrowed_fd& map_fd)
+DEFINE_BPF_GET_FD(map, MaxEntries, max_entries)  // int bpfGetFdMaxEntries(const borrowed_fd& map_fd)
+DEFINE_BPF_GET_FD(map, MapFlags, map_flags)      // int bpfGetFdMapFlags(const borrowed_fd& map_fd)
+DEFINE_BPF_GET_FD(prog, ProgId, id)              // int bpfGetFdProgId(const borrowed_fd& prog_fd)
 
 #undef DEFINE_BPF_GET_FD
 
 }  // namespace bpf
 }  // namespace android
 
-#undef BPF_FD_TO_U32
-#undef BPF_FD_TYPE
-#undef BPF_FD_JUST_USE_INT
diff --git a/common/flags.aconfig b/common/flags.aconfig
index 4c6d8ba..17ef94b 100644
--- a/common/flags.aconfig
+++ b/common/flags.aconfig
@@ -41,7 +41,7 @@
 }
 
 flag {
-  name: "tethering_request_with_soft_ap_config"
+  name: "tethering_with_soft_ap_config"
   is_exported: true
   namespace: "android_core_networking"
   description: "The flag controls the access for the parcelable TetheringRequest with getSoftApConfiguration/setSoftApConfiguration API"
diff --git a/common/networksecurity_flags.aconfig b/common/networksecurity_flags.aconfig
index 6438ba4..4a83af4 100644
--- a/common/networksecurity_flags.aconfig
+++ b/common/networksecurity_flags.aconfig
@@ -8,3 +8,12 @@
     bug: "319829948"
     is_fixed_read_only: true
 }
+
+flag {
+    name: "certificate_transparency_job"
+    is_exported: true
+    namespace: "network_security"
+    description: "Enable daily job service for certificate transparency instead of flags listener"
+    bug: "319829948"
+    is_fixed_read_only: true
+}
diff --git a/framework-t/Android.bp b/framework-t/Android.bp
index 7551b92..26fc145 100644
--- a/framework-t/Android.bp
+++ b/framework-t/Android.bp
@@ -172,6 +172,10 @@
         // Tests using hidden APIs
         "//cts/tests/netlegacy22.api",
         "//cts/tests/tests/app.usage", // NetworkUsageStatsTest
+
+        // TODO: b/374174952 Remove it when VCN CTS is moved to Connectivity/
+        "//cts/tests/tests/vcn",
+
         "//external/sl4a:__subpackages__",
         "//frameworks/base/core/tests/bandwidthtests",
         "//frameworks/base/core/tests/benchmarks",
diff --git a/framework/Android.bp b/framework/Android.bp
index 0334e11..a5a7d61 100644
--- a/framework/Android.bp
+++ b/framework/Android.bp
@@ -64,6 +64,7 @@
         ":net-utils-framework-common-srcs",
         ":framework-connectivity-api-shared-srcs",
         ":framework-networksecurity-sources",
+        ":statslog-framework-connectivity-java-gen",
     ],
     aidl: {
         generate_get_transaction_name: true,
@@ -104,6 +105,7 @@
         "androidx.annotation_annotation",
         "app-compat-annotations",
         "framework-connectivity-t.stubs.module_lib",
+        "framework-statsd.stubs.module_lib",
         "unsupportedappusage",
     ],
     apex_available: [
@@ -187,6 +189,10 @@
         // Tests using hidden APIs
         "//cts/tests/netlegacy22.api",
         "//cts/tests/tests/app.usage", // NetworkUsageStatsTest
+
+        // TODO: b/374174952 Remove it when VCN CTS is moved to Connectivity/
+        "//cts/tests/tests/vcn",
+
         "//external/sl4a:__subpackages__",
         "//frameworks/base/core/tests/bandwidthtests",
         "//frameworks/base/core/tests/benchmarks",
diff --git a/framework/src/android/net/NetworkAgent.java b/framework/src/android/net/NetworkAgent.java
index 574ab2f..cefa1ea 100644
--- a/framework/src/android/net/NetworkAgent.java
+++ b/framework/src/android/net/NetworkAgent.java
@@ -31,12 +31,14 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
+import android.os.Process;
 import android.os.RemoteException;
 import android.telephony.data.EpsBearerQosSessionAttributes;
 import android.telephony.data.NrQosSessionAttributes;
 import android.util.Log;
 
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.net.module.util.FrameworkConnectivityStatsLog;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -943,6 +945,19 @@
 
     private void queueOrSendMessage(@NonNull RegistryAction action) {
         synchronized (mPreConnectedQueue) {
+            if (mNetwork == null && !Process.isApplicationUid(Process.myUid())) {
+                // Theoretically, it should not be valid to queue messages here before
+                // registering the NetworkAgent. However, practically, with the way
+                // queueing works right now, it ends up working out just fine.
+                // Log a statistic so that we know if this is happening in the
+                // wild. The check for isApplicationUid is to prevent logging the
+                // metric from test code.
+
+                FrameworkConnectivityStatsLog.write(
+                        FrameworkConnectivityStatsLog.CORE_NETWORKING_TERRIBLE_ERROR_OCCURRED,
+                        FrameworkConnectivityStatsLog.CORE_NETWORKING_TERRIBLE_ERROR_OCCURRED__ERROR_TYPE__TYPE_MESSAGE_QUEUED_BEFORE_CONNECT
+                );
+            }
             if (mRegistry != null) {
                 try {
                     action.execute(mRegistry);
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java
index 1e36676..3291223 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java
@@ -18,6 +18,7 @@
 
 import static android.Manifest.permission.BLUETOOTH_PRIVILEGED;
 import static android.Manifest.permission.READ_DEVICE_CONFIG;
+import static android.Manifest.permission.WRITE_ALLOWLISTED_DEVICE_CONFIG;
 import static android.Manifest.permission.WRITE_DEVICE_CONFIG;
 import static android.nearby.PresenceCredential.IDENTITY_TYPE_PRIVATE;
 import static android.nearby.ScanCallback.ERROR_UNSUPPORTED;
@@ -121,7 +122,7 @@
     @Before
     public void setUp() {
         mUiAutomation.adoptShellPermissionIdentity(READ_DEVICE_CONFIG, WRITE_DEVICE_CONFIG,
-                BLUETOOTH_PRIVILEGED);
+                WRITE_ALLOWLISTED_DEVICE_CONFIG, BLUETOOTH_PRIVILEGED);
         String nameSpace = SdkLevel.isAtLeastU() ? DeviceConfig.NAMESPACE_NEARBY
                 : DeviceConfig.NAMESPACE_TETHERING;
         DeviceConfig.setProperty(nameSpace,
diff --git a/nearby/tests/unit/src/com/android/server/nearby/NearbyConfigurationTest.java b/nearby/tests/unit/src/com/android/server/nearby/NearbyConfigurationTest.java
index 644e178..e0dfd31 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/NearbyConfigurationTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/NearbyConfigurationTest.java
@@ -18,6 +18,7 @@
 
 import static android.Manifest.permission.READ_DEVICE_CONFIG;
 import static android.Manifest.permission.WRITE_DEVICE_CONFIG;
+import static android.Manifest.permission.WRITE_ALLOWLISTED_DEVICE_CONFIG;
 
 import static com.android.server.nearby.NearbyConfiguration.NEARBY_ENABLE_PRESENCE_BROADCAST_LEGACY;
 import static com.android.server.nearby.NearbyConfiguration.NEARBY_MAINLINE_NANO_APP_MIN_VERSION;
@@ -42,7 +43,8 @@
     @Before
     public void setUp() {
         InstrumentationRegistry.getInstrumentation().getUiAutomation()
-                .adoptShellPermissionIdentity(WRITE_DEVICE_CONFIG, READ_DEVICE_CONFIG);
+                .adoptShellPermissionIdentity(WRITE_DEVICE_CONFIG, WRITE_ALLOWLISTED_DEVICE_CONFIG,
+                        READ_DEVICE_CONFIG);
     }
 
     @Test
diff --git a/nearby/tests/unit/src/com/android/server/nearby/NearbyServiceTest.java b/nearby/tests/unit/src/com/android/server/nearby/NearbyServiceTest.java
index 5b640cc..891e941 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/NearbyServiceTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/NearbyServiceTest.java
@@ -19,6 +19,7 @@
 import static android.Manifest.permission.BLUETOOTH_PRIVILEGED;
 import static android.Manifest.permission.READ_DEVICE_CONFIG;
 import static android.Manifest.permission.WRITE_DEVICE_CONFIG;
+import static android.Manifest.permission.WRITE_ALLOWLISTED_DEVICE_CONFIG;
 
 import static com.android.server.nearby.NearbyConfiguration.NEARBY_SUPPORT_TEST_APP;
 
@@ -71,7 +72,8 @@
         when(mScanListener.asBinder()).thenReturn(mIBinder);
 
         mUiAutomation.adoptShellPermissionIdentity(
-                READ_DEVICE_CONFIG, WRITE_DEVICE_CONFIG, BLUETOOTH_PRIVILEGED);
+                READ_DEVICE_CONFIG, WRITE_DEVICE_CONFIG, WRITE_ALLOWLISTED_DEVICE_CONFIG,
+                BLUETOOTH_PRIVILEGED);
         mContext = InstrumentationRegistry.getInstrumentation().getContext();
         mService = new NearbyService(mContext);
         mScanRequest = createScanRequest();
diff --git a/nearby/tests/unit/src/com/android/server/nearby/managers/BroadcastProviderManagerTest.java b/nearby/tests/unit/src/com/android/server/nearby/managers/BroadcastProviderManagerTest.java
index 7ff7b13..faa32c0 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/managers/BroadcastProviderManagerTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/managers/BroadcastProviderManagerTest.java
@@ -18,6 +18,7 @@
 
 import static android.Manifest.permission.READ_DEVICE_CONFIG;
 import static android.Manifest.permission.WRITE_DEVICE_CONFIG;
+import static android.Manifest.permission.WRITE_ALLOWLISTED_DEVICE_CONFIG;
 
 import static com.android.server.nearby.NearbyConfiguration.NEARBY_ENABLE_PRESENCE_BROADCAST_LEGACY;
 import static com.android.server.nearby.NearbyConfiguration.NEARBY_SUPPORT_TEST_APP;
@@ -88,7 +89,8 @@
     @Before
     public void setUp() {
         when(mBroadcastListener.asBinder()).thenReturn(mBinder);
-        mUiAutomation.adoptShellPermissionIdentity(WRITE_DEVICE_CONFIG, READ_DEVICE_CONFIG);
+        mUiAutomation.adoptShellPermissionIdentity(WRITE_DEVICE_CONFIG,
+                WRITE_ALLOWLISTED_DEVICE_CONFIG, READ_DEVICE_CONFIG);
         DeviceConfig.setProperty(
                 NAMESPACE, NEARBY_ENABLE_PRESENCE_BROADCAST_LEGACY, "true", false);
         DeviceConfig.setProperty(
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/ChreCommunicationTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/ChreCommunicationTest.java
index ce479c8..01028bf 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/provider/ChreCommunicationTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/ChreCommunicationTest.java
@@ -18,6 +18,7 @@
 
 import static android.Manifest.permission.READ_DEVICE_CONFIG;
 import static android.Manifest.permission.WRITE_DEVICE_CONFIG;
+import static android.Manifest.permission.WRITE_ALLOWLISTED_DEVICE_CONFIG;
 
 import static com.android.server.nearby.NearbyConfiguration.NEARBY_MAINLINE_NANO_APP_MIN_VERSION;
 import static com.android.server.nearby.provider.ChreCommunication.INVALID_NANO_APP_VERSION;
@@ -76,7 +77,8 @@
     @Before
     public void setUp() {
         InstrumentationRegistry.getInstrumentation().getUiAutomation()
-                .adoptShellPermissionIdentity(WRITE_DEVICE_CONFIG, READ_DEVICE_CONFIG);
+                .adoptShellPermissionIdentity(WRITE_DEVICE_CONFIG, WRITE_ALLOWLISTED_DEVICE_CONFIG,
+                        READ_DEVICE_CONFIG);
         DeviceConfig.setProperty(
                 NAMESPACE, NEARBY_MAINLINE_NANO_APP_MIN_VERSION, "1", false);
 
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java
index 590a46e..7f391f1 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java
@@ -18,6 +18,7 @@
 
 import static android.Manifest.permission.READ_DEVICE_CONFIG;
 import static android.Manifest.permission.WRITE_DEVICE_CONFIG;
+import static android.Manifest.permission.WRITE_ALLOWLISTED_DEVICE_CONFIG;
 
 import static com.android.server.nearby.NearbyConfiguration.NEARBY_SUPPORT_TEST_APP;
 
@@ -84,7 +85,8 @@
     @Before
     public void setUp() {
         InstrumentationRegistry.getInstrumentation().getUiAutomation()
-                .adoptShellPermissionIdentity(WRITE_DEVICE_CONFIG, READ_DEVICE_CONFIG);
+                .adoptShellPermissionIdentity(WRITE_DEVICE_CONFIG, WRITE_ALLOWLISTED_DEVICE_CONFIG,
+                        READ_DEVICE_CONFIG);
 
         MockitoAnnotations.initMocks(this);
         Context context = InstrumentationRegistry.getInstrumentation().getContext();
diff --git a/networksecurity/service/Android.bp b/networksecurity/service/Android.bp
index 52667ae..a41e6a0 100644
--- a/networksecurity/service/Android.bp
+++ b/networksecurity/service/Android.bp
@@ -32,6 +32,15 @@
         "service-connectivity-pre-jarjar",
     ],
 
+    static_libs: [
+        "auto_value_annotations",
+    ],
+
+    plugins: [
+        "auto_value_plugin",
+        "auto_annotation_plugin",
+    ],
+
     // This is included in service-connectivity which is 30+
     // TODO (b/293613362): allow APEXes to have service jars with higher min_sdk than the APEX
     // (service-connectivity is only used on 31+) and use 31 here
diff --git a/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyDownloader.java b/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyDownloader.java
index 16f32c4..d53f007 100644
--- a/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyDownloader.java
+++ b/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyDownloader.java
@@ -29,6 +29,8 @@
 
 import androidx.annotation.VisibleForTesting;
 
+import com.android.server.net.ct.DownloadHelper.DownloadStatus;
+
 import java.io.IOException;
 import java.io.InputStream;
 import java.security.GeneralSecurityException;
@@ -86,12 +88,17 @@
     }
 
     void setPublicKey(String publicKey) throws GeneralSecurityException {
-        mPublicKey =
-                Optional.of(
-                        KeyFactory.getInstance("RSA")
-                                .generatePublic(
-                                        new X509EncodedKeySpec(
-                                                Base64.getDecoder().decode(publicKey))));
+        try {
+            mPublicKey =
+                    Optional.of(
+                            KeyFactory.getInstance("RSA")
+                                    .generatePublic(
+                                            new X509EncodedKeySpec(
+                                                    Base64.getDecoder().decode(publicKey))));
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Invalid public key Base64 encoding", e);
+            mPublicKey = Optional.empty();
+        }
     }
 
     @VisibleForTesting
@@ -147,19 +154,18 @@
     }
 
     private void handleMetadataDownloadCompleted(long downloadId) {
-        if (!mDownloadHelper.isSuccessful(downloadId)) {
-            Log.w(TAG, "Metadata download failed.");
-            // TODO: re-attempt download
+        DownloadStatus status = mDownloadHelper.getDownloadStatus(downloadId);
+        if (!status.isSuccessful()) {
+            handleDownloadFailed(status);
             return;
         }
-
         startContentDownload(mDataStore.getProperty(Config.CONTENT_URL_PENDING));
     }
 
     private void handleContentDownloadCompleted(long downloadId) {
-        if (!mDownloadHelper.isSuccessful(downloadId)) {
-            Log.w(TAG, "Content download failed.");
-            // TODO: re-attempt download
+        DownloadStatus status = mDownloadHelper.getDownloadStatus(downloadId);
+        if (!status.isSuccessful()) {
+            handleDownloadFailed(status);
             return;
         }
 
@@ -202,6 +208,11 @@
         }
     }
 
+    private void handleDownloadFailed(DownloadStatus status) {
+        Log.e(TAG, "Content download failed with " + status);
+        // TODO(378626065): Report failure via statsd.
+    }
+
     private boolean verify(Uri file, Uri signature) throws IOException, GeneralSecurityException {
         if (!mPublicKey.isPresent()) {
             throw new InvalidKeyException("Missing public key for signature verification");
diff --git a/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyFlagsListener.java b/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyFlagsListener.java
index 0ae982d..93a7064 100644
--- a/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyFlagsListener.java
+++ b/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyFlagsListener.java
@@ -16,7 +16,6 @@
 package com.android.server.net.ct;
 
 import android.annotation.RequiresApi;
-import android.content.Context;
 import android.os.Build;
 import android.provider.DeviceConfig;
 import android.provider.DeviceConfig.Properties;
@@ -35,10 +34,11 @@
     private final DataStore mDataStore;
     private final CertificateTransparencyDownloader mCertificateTransparencyDownloader;
 
-    CertificateTransparencyFlagsListener(Context context) {
-        mDataStore = new DataStore(Config.PREFERENCES_FILE);
-        mCertificateTransparencyDownloader =
-                new CertificateTransparencyDownloader(context, mDataStore);
+    CertificateTransparencyFlagsListener(
+            DataStore dataStore,
+            CertificateTransparencyDownloader certificateTransparencyDownloader) {
+        mDataStore = dataStore;
+        mCertificateTransparencyDownloader = certificateTransparencyDownloader;
     }
 
     void initialize() {
diff --git a/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyJob.java b/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyJob.java
new file mode 100644
index 0000000..6fbf0ba
--- /dev/null
+++ b/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyJob.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2024 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 com.android.server.net.ct;
+
+import android.annotation.RequiresApi;
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Build;
+import android.os.SystemClock;
+import android.provider.DeviceConfig;
+import android.util.Log;
+
+import java.util.HashMap;
+
+/** Implementation of the Certificate Transparency job */
+@RequiresApi(Build.VERSION_CODES.VANILLA_ICE_CREAM)
+public class CertificateTransparencyJob extends BroadcastReceiver {
+
+    private static final String TAG = "CertificateTransparencyJob";
+
+    private static final String ACTION_JOB_START = "com.android.server.net.ct.action.JOB_START";
+
+    private final Context mContext;
+    private final DataStore mDataStore;
+    private final CertificateTransparencyDownloader mCertificateTransparencyDownloader;
+    // TODO(b/374692404): remove dependency to flags.
+    private final CertificateTransparencyFlagsListener mFlagsListener;
+    private final AlarmManager mAlarmManager;
+
+    /** Creates a new {@link CertificateTransparencyJob} object. */
+    public CertificateTransparencyJob(
+            Context context,
+            DataStore dataStore,
+            CertificateTransparencyDownloader certificateTransparencyDownloader,
+            CertificateTransparencyFlagsListener flagsListener) {
+        mContext = context;
+        mFlagsListener = flagsListener;
+        mDataStore = dataStore;
+        mCertificateTransparencyDownloader = certificateTransparencyDownloader;
+        mAlarmManager = context.getSystemService(AlarmManager.class);
+    }
+
+    void initialize() {
+        mDataStore.load();
+        mCertificateTransparencyDownloader.initialize();
+
+        mContext.registerReceiver(
+                this, new IntentFilter(ACTION_JOB_START), Context.RECEIVER_EXPORTED);
+        mAlarmManager.setInexactRepeating(
+                AlarmManager.ELAPSED_REALTIME,
+                SystemClock.elapsedRealtime(), // schedule first job at earliest convenient time.
+                AlarmManager.INTERVAL_DAY,
+                PendingIntent.getBroadcast(
+                        mContext, 0, new Intent(ACTION_JOB_START), PendingIntent.FLAG_IMMUTABLE));
+
+        if (Config.DEBUG) {
+            Log.d(TAG, "CertificateTransparencyJob scheduled successfully.");
+        }
+    }
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if (!ACTION_JOB_START.equals(intent.getAction())) {
+            Log.w(TAG, "Received unexpected broadcast with action " + intent);
+            return;
+        }
+        mFlagsListener.onPropertiesChanged(
+                new DeviceConfig.Properties(Config.NAMESPACE_NETWORK_SECURITY, new HashMap<>()));
+    }
+}
diff --git a/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyService.java b/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyService.java
index edf7c56..ac55e44 100644
--- a/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyService.java
+++ b/networksecurity/service/src/com/android/server/net/ct/CertificateTransparencyService.java
@@ -28,7 +28,10 @@
 @RequiresApi(Build.VERSION_CODES.VANILLA_ICE_CREAM)
 public class CertificateTransparencyService extends ICertificateTransparencyManager.Stub {
 
+    private final DataStore mDataStore;
+    private final CertificateTransparencyDownloader mCertificateTransparencyDownloader;
     private final CertificateTransparencyFlagsListener mFlagsListener;
+    private final CertificateTransparencyJob mCertificateTransparencyJob;
 
     /**
      * @return true if the CertificateTransparency service is enabled.
@@ -41,7 +44,15 @@
 
     /** Creates a new {@link CertificateTransparencyService} object. */
     public CertificateTransparencyService(Context context) {
-        mFlagsListener = new CertificateTransparencyFlagsListener(context);
+        mDataStore = new DataStore(Config.PREFERENCES_FILE);
+        mCertificateTransparencyDownloader =
+                new CertificateTransparencyDownloader(context, mDataStore);
+        mFlagsListener =
+                new CertificateTransparencyFlagsListener(
+                        mDataStore, mCertificateTransparencyDownloader);
+        mCertificateTransparencyJob =
+                new CertificateTransparencyJob(
+                        context, mDataStore, mCertificateTransparencyDownloader, mFlagsListener);
     }
 
     /**
@@ -53,7 +64,11 @@
 
         switch (phase) {
             case SystemService.PHASE_BOOT_COMPLETED:
-                mFlagsListener.initialize();
+                if (Flags.certificateTransparencyJob()) {
+                    mCertificateTransparencyJob.initialize();
+                } else {
+                    mFlagsListener.initialize();
+                }
                 break;
             default:
         }
diff --git a/networksecurity/service/src/com/android/server/net/ct/DirectoryUtils.java b/networksecurity/service/src/com/android/server/net/ct/DirectoryUtils.java
index e3b4124..ba42a82 100644
--- a/networksecurity/service/src/com/android/server/net/ct/DirectoryUtils.java
+++ b/networksecurity/service/src/com/android/server/net/ct/DirectoryUtils.java
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.android.server.net.ct;
 
 import android.annotation.SuppressLint;
@@ -29,16 +30,33 @@
             throw new IOException("Unable to make directory " + dir.getCanonicalPath());
         }
         setWorldReadable(dir);
+        // Needed for the log list file to be accessible.
+        setWorldExecutable(dir);
     }
 
     // CT files and directories are readable by all apps.
     @SuppressLint("SetWorldReadable")
     static void setWorldReadable(File file) throws IOException {
-        if (!file.setReadable(true, false)) {
+        if (!file.setReadable(/* readable= */ true, /* ownerOnly= */ false)) {
             throw new IOException("Failed to set " + file.getCanonicalPath() + " readable");
         }
     }
 
+    // CT directories are executable by all apps, to allow access to the log list by anything on the
+    // device.
+    static void setWorldExecutable(File file) throws IOException {
+        if (!file.isDirectory()) {
+            // Only directories need to be marked as executable to allow for access
+            // to the files inside.
+            // See https://www.redhat.com/en/blog/linux-file-permissions-explained for more details.
+            return;
+        }
+
+        if (!file.setExecutable(/* executable= */ true, /* ownerOnly= */ false)) {
+            throw new IOException("Failed to set " + file.getCanonicalPath() + " executable");
+        }
+    }
+
     static boolean removeDir(File dir) {
         return deleteContentsAndDir(dir);
     }
diff --git a/networksecurity/service/src/com/android/server/net/ct/DownloadHelper.java b/networksecurity/service/src/com/android/server/net/ct/DownloadHelper.java
index cc8c4c0..5748416 100644
--- a/networksecurity/service/src/com/android/server/net/ct/DownloadHelper.java
+++ b/networksecurity/service/src/com/android/server/net/ct/DownloadHelper.java
@@ -24,6 +24,8 @@
 
 import androidx.annotation.VisibleForTesting;
 
+import com.google.auto.value.AutoValue;
+
 /** Class to handle downloads for Certificate Transparency. */
 public class DownloadHelper {
 
@@ -53,25 +55,22 @@
     }
 
     /**
-     * Returns true if the specified download completed successfully.
+     * Returns the status of the provided download id.
      *
      * @param downloadId the download.
-     * @return true if the download completed successfully.
+     * @return {@link DownloadStatus} of the download.
      */
-    public boolean isSuccessful(long downloadId) {
+    public DownloadStatus getDownloadStatus(long downloadId) {
+        DownloadStatus.Builder builder = DownloadStatus.builder().setDownloadId(downloadId);
         try (Cursor cursor = mDownloadManager.query(new Query().setFilterById(downloadId))) {
-            if (cursor == null) {
-                return false;
-            }
-            if (cursor.moveToFirst()) {
-                int status =
-                        cursor.getInt(cursor.getColumnIndexOrThrow(DownloadManager.COLUMN_STATUS));
-                if (DownloadManager.STATUS_SUCCESSFUL == status) {
-                    return true;
-                }
+            if (cursor != null && cursor.moveToFirst()) {
+                builder.setStatus(
+                        cursor.getInt(cursor.getColumnIndexOrThrow(DownloadManager.COLUMN_STATUS)));
+                builder.setReason(
+                        cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_REASON)));
             }
         }
-        return false;
+        return builder.build();
     }
 
     /**
@@ -87,4 +86,58 @@
         }
         return mDownloadManager.getUriForDownloadedFile(downloadId);
     }
+
+    /** A wrapper around the status and reason Ids returned by the {@link DownloadManager}. */
+    @AutoValue
+    public abstract static class DownloadStatus {
+
+        abstract long downloadId();
+
+        abstract int status();
+
+        abstract int reason();
+
+        boolean isSuccessful() {
+            return status() == DownloadManager.STATUS_SUCCESSFUL;
+        }
+
+        boolean isStorageError() {
+            int status = status();
+            int reason = reason();
+            return status == DownloadManager.STATUS_FAILED
+                    && (reason == DownloadManager.ERROR_DEVICE_NOT_FOUND
+                            || reason == DownloadManager.ERROR_FILE_ERROR
+                            || reason == DownloadManager.ERROR_FILE_ALREADY_EXISTS
+                            || reason == DownloadManager.ERROR_INSUFFICIENT_SPACE);
+        }
+
+        boolean isHttpError() {
+            int status = status();
+            int reason = reason();
+            return status == DownloadManager.STATUS_FAILED
+                    && (reason == DownloadManager.ERROR_HTTP_DATA_ERROR
+                            || reason == DownloadManager.ERROR_TOO_MANY_REDIRECTS
+                            || reason == DownloadManager.ERROR_UNHANDLED_HTTP_CODE
+                            // If an HTTP error occurred, reason will hold the HTTP status code.
+                            || (400 <= reason && reason < 600));
+        }
+
+        @AutoValue.Builder
+        abstract static class Builder {
+            abstract Builder setDownloadId(long downloadId);
+
+            abstract Builder setStatus(int status);
+
+            abstract Builder setReason(int reason);
+
+            abstract DownloadStatus build();
+        }
+
+        static Builder builder() {
+            return new AutoValue_DownloadHelper_DownloadStatus.Builder()
+                    .setDownloadId(-1)
+                    .setStatus(-1)
+                    .setReason(-1);
+        }
+    }
 }
diff --git a/networksecurity/tests/unit/src/com/android/server/net/ct/CertificateTransparencyDownloaderTest.java b/networksecurity/tests/unit/src/com/android/server/net/ct/CertificateTransparencyDownloaderTest.java
index df02446..fb55295 100644
--- a/networksecurity/tests/unit/src/com/android/server/net/ct/CertificateTransparencyDownloaderTest.java
+++ b/networksecurity/tests/unit/src/com/android/server/net/ct/CertificateTransparencyDownloaderTest.java
@@ -31,6 +31,8 @@
 
 import androidx.test.platform.app.InstrumentationRegistry;
 
+import com.android.server.net.ct.DownloadHelper.DownloadStatus;
+
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
@@ -115,11 +117,11 @@
     }
 
     @Test
-    public void testDownloader_handleMetadataCompleteSuccessful() {
+    public void testDownloader_metadataDownloadSuccess_startContentDownload() {
         long metadataId = 123;
         mDataStore.setPropertyLong(Config.METADATA_URL_KEY, metadataId);
-        when(mDownloadHelper.isSuccessful(metadataId)).thenReturn(true);
-
+        when(mDownloadHelper.getDownloadStatus(metadataId))
+                .thenReturn(makeSuccessfulDownloadStatus(metadataId));
         long contentId = 666;
         String contentUrl = "http://test-content.org";
         mDataStore.setProperty(Config.CONTENT_URL_PENDING, contentUrl);
@@ -132,23 +134,28 @@
     }
 
     @Test
-    public void testDownloader_handleMetadataCompleteFailed() {
+    public void testDownloader_metadataDownloadFail_doNotStartContentDownload() {
         long metadataId = 123;
         mDataStore.setPropertyLong(Config.METADATA_URL_KEY, metadataId);
-        when(mDownloadHelper.isSuccessful(metadataId)).thenReturn(false);
-
         String contentUrl = "http://test-content.org";
         mDataStore.setProperty(Config.CONTENT_URL_PENDING, contentUrl);
+        Intent downloadCompleteIntent = makeDownloadCompleteIntent(metadataId);
+        // In all these failure cases we give up on the download.
+        when(mDownloadHelper.getDownloadStatus(metadataId))
+                .thenReturn(
+                        makeHttpErrorDownloadStatus(metadataId),
+                        makeStorageErrorDownloadStatus(metadataId));
 
-        mCertificateTransparencyDownloader.onReceive(
-                mContext, makeDownloadCompleteIntent(metadataId));
+        mCertificateTransparencyDownloader.onReceive(mContext, downloadCompleteIntent);
+        mCertificateTransparencyDownloader.onReceive(mContext, downloadCompleteIntent);
 
         verify(mDownloadHelper, never()).startDownload(contentUrl);
     }
 
     @Test
-    public void testDownloader_handleContentCompleteInstallSuccessful() throws Exception {
-        String version = "666";
+    public void testDownloader_contentDownloadSuccess_installSuccess_updateDataStore()
+            throws Exception {
+        String version = "456";
         long contentId = 666;
         File logListFile = File.createTempFile("log_list", "json");
         Uri contentUri = Uri.fromFile(logListFile);
@@ -157,8 +164,8 @@
         Uri metadataUri = Uri.fromFile(metadataFile);
         mCertificateTransparencyDownloader.setPublicKey(
                 Base64.getEncoder().encodeToString(mPublicKey.getEncoded()));
-
-        setUpDownloadComplete(version, metadataId, metadataUri, contentId, contentUri);
+        setUpContentDownloadCompleteSuccessful(
+                version, metadataId, metadataUri, contentId, contentUri);
         when(mCertificateTransparencyInstaller.install(
                         eq(Config.COMPATIBILITY_VERSION), any(), eq(version)))
                 .thenReturn(true);
@@ -166,7 +173,6 @@
         assertThat(mDataStore.getProperty(Config.VERSION)).isNull();
         assertThat(mDataStore.getProperty(Config.CONTENT_URL)).isNull();
         assertThat(mDataStore.getProperty(Config.METADATA_URL)).isNull();
-
         mCertificateTransparencyDownloader.onReceive(
                 mContext, makeDownloadCompleteIntent(contentId));
 
@@ -178,16 +184,38 @@
     }
 
     @Test
-    public void testDownloader_handleContentCompleteInstallFails() throws Exception {
-        String version = "666";
+    public void testDownloader_contentDownloadFail_doNotInstall() throws Exception {
+        mDataStore.setProperty(Config.VERSION_PENDING, "123");
+        long contentId = 666;
+        Intent downloadCompleteIntent = makeDownloadCompleteIntent(contentId);
+        // In all these failure cases we give up on the download.
+        when(mDownloadHelper.getDownloadStatus(contentId))
+                .thenReturn(
+                        makeHttpErrorDownloadStatus(contentId),
+                        makeStorageErrorDownloadStatus(contentId));
+
+        mCertificateTransparencyDownloader.onReceive(mContext, downloadCompleteIntent);
+        mCertificateTransparencyDownloader.onReceive(mContext, downloadCompleteIntent);
+        mCertificateTransparencyDownloader.onReceive(mContext, downloadCompleteIntent);
+
+        verify(mCertificateTransparencyInstaller, never()).install(any(), any(), any());
+        assertThat(mDataStore.getProperty(Config.VERSION)).isNull();
+        assertThat(mDataStore.getProperty(Config.CONTENT_URL)).isNull();
+        assertThat(mDataStore.getProperty(Config.METADATA_URL)).isNull();
+    }
+
+    @Test
+    public void testDownloader_contentDownloadSuccess_installFail_doNotUpdateDataStore()
+            throws Exception {
+        String version = "456";
         long contentId = 666;
         File logListFile = File.createTempFile("log_list", "json");
         Uri contentUri = Uri.fromFile(logListFile);
         long metadataId = 123;
         File metadataFile = sign(logListFile);
         Uri metadataUri = Uri.fromFile(metadataFile);
-
-        setUpDownloadComplete(version, metadataId, metadataUri, contentId, contentUri);
+        setUpContentDownloadCompleteSuccessful(
+                version, metadataId, metadataUri, contentId, contentUri);
         when(mCertificateTransparencyInstaller.install(
                         eq(Config.COMPATIBILITY_VERSION), any(), eq(version)))
                 .thenReturn(false);
@@ -201,14 +229,15 @@
     }
 
     @Test
-    public void testDownloader_handleContentCompleteVerificationFails() throws IOException {
-        String version = "666";
+    public void testDownloader_contentDownloadSuccess_verificationFail_doNotInstall()
+            throws IOException {
+        String version = "456";
         long contentId = 666;
         Uri contentUri = Uri.fromFile(File.createTempFile("log_list", "json"));
         long metadataId = 123;
         Uri metadataUri = Uri.fromFile(File.createTempFile("log_list-wrong_metadata", "sig"));
-
-        setUpDownloadComplete(version, metadataId, metadataUri, contentId, contentUri);
+        setUpContentDownloadCompleteSuccessful(
+                version, metadataId, metadataUri, contentId, contentUri);
 
         mCertificateTransparencyDownloader.onReceive(
                 mContext, makeDownloadCompleteIntent(contentId));
@@ -221,17 +250,17 @@
     }
 
     @Test
-    public void testDownloader_handleContentCompleteMissingVerificationPublicKey()
+    public void testDownloader_contentDownloadSuccess_missingVerificationPublicKey_doNotInstall()
             throws Exception {
-        String version = "666";
+        String version = "456";
         long contentId = 666;
         File logListFile = File.createTempFile("log_list", "json");
         Uri contentUri = Uri.fromFile(logListFile);
         long metadataId = 123;
         File metadataFile = sign(logListFile);
         Uri metadataUri = Uri.fromFile(metadataFile);
-
-        setUpDownloadComplete(version, metadataId, metadataUri, contentId, contentUri);
+        setUpContentDownloadCompleteSuccessful(
+                version, metadataId, metadataUri, contentId, contentUri);
 
         mCertificateTransparencyDownloader.onReceive(
                 mContext, makeDownloadCompleteIntent(contentId));
@@ -248,7 +277,7 @@
                 .putExtra(DownloadManager.EXTRA_DOWNLOAD_ID, downloadId);
     }
 
-    private void setUpDownloadComplete(
+    private void setUpContentDownloadCompleteSuccessful(
             String version, long metadataId, Uri metadataUri, long contentId, Uri contentUri)
             throws IOException {
         mDataStore.setProperty(Config.VERSION_PENDING, version);
@@ -259,10 +288,34 @@
 
         mDataStore.setPropertyLong(Config.CONTENT_URL_KEY, contentId);
         mDataStore.setProperty(Config.CONTENT_URL_PENDING, contentUri.toString());
-        when(mDownloadHelper.isSuccessful(contentId)).thenReturn(true);
+        when(mDownloadHelper.getDownloadStatus(contentId))
+                .thenReturn(makeSuccessfulDownloadStatus(contentId));
         when(mDownloadHelper.getUri(contentId)).thenReturn(contentUri);
     }
 
+    private DownloadStatus makeSuccessfulDownloadStatus(long downloadId) {
+        return DownloadStatus.builder()
+                .setDownloadId(downloadId)
+                .setStatus(DownloadManager.STATUS_SUCCESSFUL)
+                .build();
+    }
+
+    private DownloadStatus makeStorageErrorDownloadStatus(long downloadId) {
+        return DownloadStatus.builder()
+                .setDownloadId(downloadId)
+                .setStatus(DownloadManager.STATUS_FAILED)
+                .setReason(DownloadManager.ERROR_INSUFFICIENT_SPACE)
+                .build();
+    }
+
+    private DownloadStatus makeHttpErrorDownloadStatus(long downloadId) {
+        return DownloadStatus.builder()
+                .setDownloadId(downloadId)
+                .setStatus(DownloadManager.STATUS_FAILED)
+                .setReason(DownloadManager.ERROR_HTTP_DATA_ERROR)
+                .build();
+    }
+
     private File sign(File file) throws IOException, GeneralSecurityException {
         File signatureFile = File.createTempFile("log_list-metadata", "sig");
         Signature signer = Signature.getInstance("SHA256withRSA");
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsInetAddressRecord.java b/service-t/src/com/android/server/connectivity/mdns/MdnsInetAddressRecord.java
index 4399f2d..3eae3c7 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsInetAddressRecord.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsInetAddressRecord.java
@@ -18,8 +18,6 @@
 
 import android.annotation.Nullable;
 
-import androidx.annotation.VisibleForTesting;
-
 import java.io.IOException;
 import java.net.Inet4Address;
 import java.net.Inet6Address;
@@ -29,7 +27,6 @@
 import java.util.Objects;
 
 /** An mDNS "AAAA" or "A" record, which holds an IPv6 or IPv4 address. */
-@VisibleForTesting(otherwise = VisibleForTesting.PACKAGE_PRIVATE)
 public class MdnsInetAddressRecord extends MdnsRecord {
     @Nullable private Inet6Address inet6Address;
     @Nullable private Inet4Address inet4Address;
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsPointerRecord.java b/service-t/src/com/android/server/connectivity/mdns/MdnsPointerRecord.java
index 39bf653..e8f5e71 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsPointerRecord.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsPointerRecord.java
@@ -18,15 +18,12 @@
 
 import android.annotation.Nullable;
 
-import androidx.annotation.VisibleForTesting;
-
 import com.android.net.module.util.DnsUtils;
 
 import java.io.IOException;
 import java.util.Arrays;
 
 /** An mDNS "PTR" record, which holds a name (the "pointer"). */
-@VisibleForTesting(otherwise = VisibleForTesting.PACKAGE_PRIVATE)
 public class MdnsPointerRecord extends MdnsRecord {
     private String[] pointer;
 
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsQueryScheduler.java b/service-t/src/com/android/server/connectivity/mdns/MdnsQueryScheduler.java
index e52dd2f..356b738 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsQueryScheduler.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsQueryScheduler.java
@@ -107,7 +107,7 @@
         final QueryTaskConfig nextRunConfig = currentConfig.getConfigForNextRun(queryMode);
         long timeToRun;
         if (mLastScheduledQueryTaskArgs == null && !forceEnableBackoff) {
-            timeToRun = now + nextRunConfig.delayBeforeTaskWithoutBackoffMs;
+            timeToRun = now + nextRunConfig.getDelayBeforeTaskWithoutBackoff();
         } else {
             timeToRun = calculateTimeToRun(mLastScheduledQueryTaskArgs,
                     nextRunConfig, now, minRemainingTtl, lastSentTime, numOfQueriesBeforeBackoff,
@@ -133,7 +133,7 @@
     private static long calculateTimeToRun(@Nullable ScheduledQueryTaskArgs taskArgs,
             QueryTaskConfig queryTaskConfig, long now, long minRemainingTtl, long lastSentTime,
             int numOfQueriesBeforeBackoff, boolean forceEnableBackoff) {
-        final long baseDelayInMs = queryTaskConfig.delayBeforeTaskWithoutBackoffMs;
+        final long baseDelayInMs = queryTaskConfig.getDelayBeforeTaskWithoutBackoff();
         if (!(forceEnableBackoff
                 || queryTaskConfig.shouldUseQueryBackoff(numOfQueriesBeforeBackoff))) {
             return lastSentTime + baseDelayInMs;
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsServiceRecord.java b/service-t/src/com/android/server/connectivity/mdns/MdnsServiceRecord.java
index fd716d2..907e2ff 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsServiceRecord.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsServiceRecord.java
@@ -18,8 +18,6 @@
 
 import android.annotation.Nullable;
 
-import androidx.annotation.VisibleForTesting;
-
 import com.android.net.module.util.DnsUtils;
 
 import java.io.IOException;
@@ -28,7 +26,6 @@
 import java.util.Objects;
 
 /** An mDNS "SRV" record, which contains service information. */
-@VisibleForTesting(otherwise = VisibleForTesting.PACKAGE_PRIVATE)
 public class MdnsServiceRecord extends MdnsRecord {
     public static final int PROTO_NONE = 0;
     public static final int PROTO_TCP = 1;
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsTextRecord.java b/service-t/src/com/android/server/connectivity/mdns/MdnsTextRecord.java
index 77d1d7a..2b3ebf9 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsTextRecord.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsTextRecord.java
@@ -18,8 +18,6 @@
 
 import android.annotation.Nullable;
 
-import androidx.annotation.VisibleForTesting;
-
 import com.android.server.connectivity.mdns.MdnsServiceInfo.TextEntry;
 
 import java.io.IOException;
@@ -29,7 +27,6 @@
 import java.util.Objects;
 
 /** An mDNS "TXT" record, which contains a list of {@link TextEntry}. */
-@VisibleForTesting(otherwise = VisibleForTesting.PACKAGE_PRIVATE)
 public class MdnsTextRecord extends MdnsRecord {
     private List<TextEntry> entries;
 
diff --git a/service-t/src/com/android/server/connectivity/mdns/QueryTaskConfig.java b/service-t/src/com/android/server/connectivity/mdns/QueryTaskConfig.java
index 4e74159..dd4073f 100644
--- a/service-t/src/com/android/server/connectivity/mdns/QueryTaskConfig.java
+++ b/service-t/src/com/android/server/connectivity/mdns/QueryTaskConfig.java
@@ -52,118 +52,124 @@
     final int transactionId;
     @VisibleForTesting
     final boolean expectUnicastResponse;
-    private final int queriesPerBurst;
-    private final int timeBetweenBurstsInMs;
-    private final int burstCounter;
-    final long delayBeforeTaskWithoutBackoffMs;
-    private final boolean isFirstBurst;
-    private final long queryIndex;
+    private final int queryIndex;
+    private final int queryMode;
 
-    QueryTaskConfig(long queryIndex, int transactionId,
-            boolean expectUnicastResponse, boolean isFirstBurst, int burstCounter,
-            int queriesPerBurst, int timeBetweenBurstsInMs,
-            long delayBeforeTaskWithoutBackoffMs) {
+    QueryTaskConfig(int queryMode, int queryIndex, int transactionId,
+            boolean expectUnicastResponse) {
+        this.queryMode = queryMode;
         this.transactionId = transactionId;
-        this.expectUnicastResponse = expectUnicastResponse;
-        this.queriesPerBurst = queriesPerBurst;
-        this.timeBetweenBurstsInMs = timeBetweenBurstsInMs;
-        this.burstCounter = burstCounter;
-        this.delayBeforeTaskWithoutBackoffMs = delayBeforeTaskWithoutBackoffMs;
-        this.isFirstBurst = isFirstBurst;
         this.queryIndex = queryIndex;
+        this.expectUnicastResponse = expectUnicastResponse;
     }
 
     QueryTaskConfig(int queryMode) {
-        this.queriesPerBurst = QUERIES_PER_BURST;
-        this.burstCounter = 0;
-        this.transactionId = 1;
-        this.expectUnicastResponse = true;
-        this.isFirstBurst = true;
-        // Config the scan frequency based on the scan mode.
-        if (queryMode == AGGRESSIVE_QUERY_MODE) {
-            this.timeBetweenBurstsInMs = INITIAL_AGGRESSIVE_TIME_BETWEEN_BURSTS_MS;
-            this.delayBeforeTaskWithoutBackoffMs =
-                    TIME_BETWEEN_RETRANSMISSION_QUERIES_IN_BURST_MS;
-        } else if (queryMode == PASSIVE_QUERY_MODE) {
-            // In passive scan mode, sends a single burst of QUERIES_PER_BURST queries, and then
-            // in each TIME_BETWEEN_BURSTS interval, sends QUERIES_PER_BURST_PASSIVE_MODE
-            // queries.
-            this.timeBetweenBurstsInMs = MAX_TIME_BETWEEN_ACTIVE_PASSIVE_BURSTS_MS;
-            this.delayBeforeTaskWithoutBackoffMs = TIME_BETWEEN_QUERIES_IN_BURST_MS;
-        } else {
-            // In active scan mode, sends a burst of QUERIES_PER_BURST queries,
-            // TIME_BETWEEN_QUERIES_IN_BURST_MS apart, then waits for the scan interval, and
-            // then repeats. The scan interval starts as INITIAL_TIME_BETWEEN_BURSTS_MS and
-            // doubles until it maxes out at TIME_BETWEEN_BURSTS_MS.
-            this.timeBetweenBurstsInMs = INITIAL_TIME_BETWEEN_BURSTS_MS;
-            this.delayBeforeTaskWithoutBackoffMs = TIME_BETWEEN_QUERIES_IN_BURST_MS;
-        }
-        this.queryIndex = 0;
+        this(queryMode, 0, 1, true);
     }
 
-    long getDelayBeforeNextTaskWithoutBackoff(boolean isFirstQueryInBurst,
-            boolean isLastQueryInBurst, int queryMode) {
-        if (isFirstQueryInBurst && queryMode == AGGRESSIVE_QUERY_MODE) {
-            return 0;
+    private static int getBurstIndex(int queryIndex, int queryMode) {
+        if (queryMode == PASSIVE_QUERY_MODE && queryIndex >= QUERIES_PER_BURST) {
+            // In passive mode, after the first burst of QUERIES_PER_BURST queries, subsequent
+            // bursts have QUERIES_PER_BURST_PASSIVE_MODE queries.
+            final int queryIndexAfterFirstBurst = queryIndex - QUERIES_PER_BURST;
+            return 1 + (queryIndexAfterFirstBurst / QUERIES_PER_BURST_PASSIVE_MODE);
+        } else {
+            return queryIndex / QUERIES_PER_BURST;
         }
-        if (isLastQueryInBurst) {
-            return timeBetweenBurstsInMs;
+    }
+
+    private static int getQueryIndexInBurst(int queryIndex, int queryMode) {
+        if (queryMode == PASSIVE_QUERY_MODE && queryIndex >= QUERIES_PER_BURST) {
+            final int queryIndexAfterFirstBurst = queryIndex - QUERIES_PER_BURST;
+            return queryIndexAfterFirstBurst % QUERIES_PER_BURST_PASSIVE_MODE;
+        } else {
+            return queryIndex % QUERIES_PER_BURST;
+        }
+    }
+
+    private static boolean isFirstBurst(int queryIndex, int queryMode) {
+        return getBurstIndex(queryIndex, queryMode) == 0;
+    }
+
+    private static boolean isFirstQueryInBurst(int queryIndex, int queryMode) {
+        return getQueryIndexInBurst(queryIndex, queryMode) == 0;
+    }
+
+    // TODO: move delay calculations to MdnsQueryScheduler
+    long getDelayBeforeTaskWithoutBackoff() {
+        return getDelayBeforeTaskWithoutBackoff(queryIndex, queryMode);
+    }
+
+    private static long getDelayBeforeTaskWithoutBackoff(int queryIndex, int queryMode) {
+        final int burstIndex = getBurstIndex(queryIndex, queryMode);
+        final int queryIndexInBurst = getQueryIndexInBurst(queryIndex, queryMode);
+        if (queryIndexInBurst == 0) {
+            return getTimeToBurstMs(burstIndex, queryMode);
+        } else if (queryIndexInBurst == 1 && queryMode == AGGRESSIVE_QUERY_MODE) {
+            // In aggressive mode, the first 2 queries are sent without delay.
+            return 0;
         }
         return queryMode == AGGRESSIVE_QUERY_MODE
                 ? TIME_BETWEEN_RETRANSMISSION_QUERIES_IN_BURST_MS
                 : TIME_BETWEEN_QUERIES_IN_BURST_MS;
     }
 
-    boolean getNextExpectUnicastResponse(boolean isLastQueryInBurst, int queryMode) {
-        if (!isLastQueryInBurst) {
-            return false;
-        }
+    private boolean getExpectUnicastResponse(int queryIndex, int queryMode) {
         if (queryMode == AGGRESSIVE_QUERY_MODE) {
-            return true;
+            if (isFirstQueryInBurst(queryIndex, queryMode)) {
+                return true;
+            }
         }
         return alwaysAskForUnicastResponse;
     }
 
-    int getNextTimeBetweenBurstsMs(boolean isLastQueryInBurst, int queryMode) {
-        if (!isLastQueryInBurst) {
-            return timeBetweenBurstsInMs;
+    /**
+     * Shifts a value left by the specified number of bits, coercing to at most maxValue.
+     *
+     * <p>This allows calculating min(value*2^shift, maxValue) without overflow.
+     */
+    private static int boundedLeftShift(int value, int shift, int maxValue) {
+        // There must be at least one leading zero for positive values, so the maximum left shift
+        // without overflow is the number of leading zeros minus one.
+        final int maxShift = Integer.numberOfLeadingZeros(value) - 1;
+        if (shift > maxShift) {
+            // The shift would overflow positive integers, so is greater than maxValue.
+            return maxValue;
         }
-        final int maxTimeBetweenBursts = queryMode == AGGRESSIVE_QUERY_MODE
-                ? MAX_TIME_BETWEEN_AGGRESSIVE_BURSTS_MS : MAX_TIME_BETWEEN_ACTIVE_PASSIVE_BURSTS_MS;
-        return Math.min(timeBetweenBurstsInMs * 2, maxTimeBetweenBursts);
+        return Math.min(value << shift, maxValue);
+    }
+
+    private static int getTimeToBurstMs(int burstIndex, int queryMode) {
+        if (burstIndex == 0) {
+            // No delay before the first burst
+            return 0;
+        }
+        switch (queryMode) {
+            case PASSIVE_QUERY_MODE:
+                return MAX_TIME_BETWEEN_ACTIVE_PASSIVE_BURSTS_MS;
+            case AGGRESSIVE_QUERY_MODE:
+                return boundedLeftShift(INITIAL_AGGRESSIVE_TIME_BETWEEN_BURSTS_MS,
+                        burstIndex - 1,
+                        MAX_TIME_BETWEEN_AGGRESSIVE_BURSTS_MS);
+            default: // ACTIVE_QUERY_MODE
+                return boundedLeftShift(INITIAL_TIME_BETWEEN_BURSTS_MS,
+                        burstIndex - 1,
+                        MAX_TIME_BETWEEN_ACTIVE_PASSIVE_BURSTS_MS);
+        }
     }
 
     /**
      * Get new QueryTaskConfig for next run.
      */
     public QueryTaskConfig getConfigForNextRun(int queryMode) {
-        long newQueryCount = queryIndex + 1;
+        final int newQueryIndex = queryIndex + 1;
         int newTransactionId = transactionId + 1;
         if (newTransactionId > UNSIGNED_SHORT_MAX_VALUE) {
             newTransactionId = 1;
         }
 
-        int newQueriesPerBurst = queriesPerBurst;
-        int newBurstCounter = burstCounter + 1;
-        final boolean isFirstQueryInBurst = newBurstCounter == 1;
-        final boolean isLastQueryInBurst = newBurstCounter == queriesPerBurst;
-        boolean newIsFirstBurst = isFirstBurst && !isLastQueryInBurst;
-        if (isLastQueryInBurst) {
-            newBurstCounter = 0;
-            // In passive scan mode, sends a single burst of QUERIES_PER_BURST queries, and
-            // then in each TIME_BETWEEN_BURSTS interval, sends QUERIES_PER_BURST_PASSIVE_MODE
-            // queries.
-            if (isFirstBurst && queryMode == PASSIVE_QUERY_MODE) {
-                newQueriesPerBurst = QUERIES_PER_BURST_PASSIVE_MODE;
-            }
-        }
-
-        return new QueryTaskConfig(newQueryCount, newTransactionId,
-                getNextExpectUnicastResponse(isLastQueryInBurst, queryMode), newIsFirstBurst,
-                newBurstCounter, newQueriesPerBurst,
-                getNextTimeBetweenBurstsMs(isLastQueryInBurst, queryMode),
-                getDelayBeforeNextTaskWithoutBackoff(
-                        isFirstQueryInBurst, isLastQueryInBurst, queryMode));
+        return new QueryTaskConfig(queryMode, newQueryIndex, newTransactionId,
+                getExpectUnicastResponse(newQueryIndex, queryMode));
     }
 
     /**
@@ -171,7 +177,7 @@
      */
     public boolean shouldUseQueryBackoff(int numOfQueriesBeforeBackoff) {
         // Don't enable backoff mode during the burst or in the first burst
-        if (burstCounter != 0 || isFirstBurst) {
+        if (!isFirstQueryInBurst(queryIndex, queryMode) || isFirstBurst(queryIndex, queryMode)) {
             return false;
         }
         return queryIndex > numOfQueriesBeforeBackoff;
diff --git a/service-t/src/com/android/server/ethernet/EthernetTracker.java b/service-t/src/com/android/server/ethernet/EthernetTracker.java
index 67d0891..07469b1 100644
--- a/service-t/src/com/android/server/ethernet/EthernetTracker.java
+++ b/service-t/src/com/android/server/ethernet/EthernetTracker.java
@@ -215,9 +215,6 @@
         // Note: processNetlinkMessage is called on the handler thread.
         @Override
         protected void processNetlinkMessage(NetlinkMessage nlMsg, long whenMs) {
-            // ignore all updates when ethernet is disabled.
-            if (mEthernetState == ETHERNET_STATE_DISABLED) return;
-
             if (nlMsg instanceof RtNetlinkLinkMessage) {
                 processRtNetlinkLinkMessage((RtNetlinkLinkMessage) nlMsg);
             } else {
@@ -596,10 +593,13 @@
             // Read the flags before attempting to bring up the interface. If the interface is
             // already running an UP event is created after adding the interface.
             config = NetdUtils.getInterfaceConfigParcel(mNetd, iface);
-            if (NetdUtils.hasFlag(config, INetd.IF_STATE_DOWN)) {
+            // Only bring the interface up when ethernet is enabled.
+            if (mEthernetState == ETHERNET_STATE_ENABLED) {
                 // As a side-effect, NetdUtils#setInterfaceUp() also clears the interface's IPv4
                 // address and readds it which *could* lead to unexpected behavior in the future.
                 NetdUtils.setInterfaceUp(mNetd, iface);
+            } else if (mEthernetState == ETHERNET_STATE_DISABLED) {
+                NetdUtils.setInterfaceDown(mNetd, iface);
             }
         } catch (IllegalStateException e) {
             // Either the system is crashing or the interface has disappeared. Just ignore the
@@ -646,6 +646,10 @@
     }
 
     private void setInterfaceAdministrativeState(String iface, boolean up, EthernetCallback cb) {
+        if (mEthernetState == ETHERNET_STATE_DISABLED) {
+            cb.onError("Cannot enable/disable interface when ethernet is disabled");
+            return;
+        }
         if (getInterfaceState(iface) == EthernetManager.STATE_ABSENT) {
             cb.onError("Failed to enable/disable absent interface: " + iface);
             return;
@@ -965,22 +969,26 @@
 
             mEthernetState = newState;
 
-            if (enabled) {
-                trackAvailableInterfaces();
-            } else {
-                // TODO: maybe also disable server mode interface as well.
-                untrackFactoryInterfaces();
+            // Interface in server mode should also be included.
+            ArrayList<String> interfaces =
+                    new ArrayList<>(
+                    List.of(mFactory.getAvailableInterfaces(/* includeRestricted */ true)));
+
+            if (mTetheringInterfaceMode == INTERFACE_MODE_SERVER) {
+                interfaces.add(mTetheringInterface);
+            }
+
+            for (String iface : interfaces) {
+                if (enabled) {
+                    NetdUtils.setInterfaceUp(mNetd, iface);
+                } else {
+                    NetdUtils.setInterfaceDown(mNetd, iface);
+                }
             }
             broadcastEthernetStateChange(mEthernetState);
         });
     }
 
-    private void untrackFactoryInterfaces() {
-        for (String iface : mFactory.getAvailableInterfaces(true /* includeRestricted */)) {
-            stopTrackingInterface(iface);
-        }
-    }
-
     private void unicastEthernetStateChange(@NonNull IEthernetServiceListener listener,
             int state) {
         ensureRunningOnEthernetServiceThread();
diff --git a/service/Android.bp b/service/Android.bp
index 567c079..fd3d4a3 100644
--- a/service/Android.bp
+++ b/service/Android.bp
@@ -90,7 +90,6 @@
     static_libs: [
         "libnet_utils_device_common_bpfjni",
         "libnet_utils_device_common_bpfutils",
-        "libnet_utils_device_common_timerfdjni",
     ],
     shared_libs: [
         "liblog",
@@ -126,6 +125,7 @@
         "libmodules-utils-build",
         "libnetjniutils",
         "libnet_utils_device_common_bpfjni",
+        "libnet_utils_device_common_timerfdjni",
         "netd_aidl_interface-lateststable-ndk",
     ],
     shared_libs: [
diff --git a/service/ServiceConnectivityResources/res/values-sw/strings.xml b/service/ServiceConnectivityResources/res/values-sw/strings.xml
index 29ec013..9ff9ada 100644
--- a/service/ServiceConnectivityResources/res/values-sw/strings.xml
+++ b/service/ServiceConnectivityResources/res/values-sw/strings.xml
@@ -25,7 +25,7 @@
     <string name="mobile_network_available_no_internet" msgid="1000871587359324217">"Hakuna intaneti"</string>
     <string name="mobile_network_available_no_internet_detailed" msgid="5438738723127062816">"Huenda data ya <xliff:g id="NETWORK_CARRIER">%1$s</xliff:g> imeisha. Gusa ili upate chaguo."</string>
     <string name="mobile_network_available_no_internet_detailed_unknown_carrier" msgid="5375681117265354337">"Huenda data yako imeisha. Gusa ili upate chaguo."</string>
-    <string name="wifi_no_internet" msgid="1326348603404555475">"<xliff:g id="NETWORK_SSID">%1$s</xliff:g> haina uwezo wa kufikia intaneti"</string>
+    <string name="wifi_no_internet" msgid="1326348603404555475">"<xliff:g id="NETWORK_SSID">%1$s</xliff:g> haina intaneti"</string>
     <string name="wifi_no_internet_detailed" msgid="1746921096565304090">"Gusa ili upate chaguo"</string>
     <string name="mobile_no_internet" msgid="4087718456753201450">"Mtandao wa simu hauna uwezo wa kufikia intaneti"</string>
     <string name="other_networks_no_internet" msgid="5693932964749676542">"Mtandao hauna uwezo wa kufikia intaneti"</string>
diff --git a/service/jni/onload.cpp b/service/jni/onload.cpp
index bb70d4f..8e01260 100644
--- a/service/jni/onload.cpp
+++ b/service/jni/onload.cpp
@@ -26,6 +26,8 @@
 int register_android_server_net_NetworkStatsFactory(JNIEnv* env);
 int register_android_server_net_NetworkStatsService(JNIEnv* env);
 int register_com_android_server_ServiceManagerWrapper(JNIEnv* env);
+int register_com_android_net_module_util_TimerFdUtils(JNIEnv *env,
+                                                      char const *class_name);
 
 extern "C" jint JNI_OnLoad(JavaVM* vm, void*) {
     JNIEnv *env;
@@ -56,6 +58,12 @@
         }
     }
 
+    if (register_com_android_net_module_util_TimerFdUtils(
+            env, "android/net/connectivity/com/android/net/module/util/"
+                 "TimerFdUtils") < 0) {
+      return JNI_ERR;
+    }
+
     return JNI_VERSION_1_6;
 }
 
diff --git a/service/libconnectivity/Android.bp b/service/libconnectivity/Android.bp
index 3a72134..9bfe3a9 100644
--- a/service/libconnectivity/Android.bp
+++ b/service/libconnectivity/Android.bp
@@ -42,6 +42,7 @@
     ],
     llndk: {
         symbol_file: "libconnectivity_native.map.txt",
+        moved_to_apex: true,
     },
     stubs: {
         symbol_file: "libconnectivity_native.map.txt",
diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
old mode 100755
new mode 100644
index 9015434..0d0f6fc
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -5551,7 +5551,7 @@
         }
 
         // Delayed teardown.
-        if (nai.isCreated()) {
+        if (nai.isCreated() && !nai.isDestroyed()) {
             try {
                 mNetd.networkSetPermissionForNetwork(nai.network.netId, INetd.PERMISSION_SYSTEM);
             } catch (RemoteException e) {
diff --git a/staticlibs/Android.bp b/staticlibs/Android.bp
index f484027..b4a3b8a 100644
--- a/staticlibs/Android.bp
+++ b/staticlibs/Android.bp
@@ -32,6 +32,8 @@
     default_applicable_licenses: ["Android-Apache-2.0"],
 }
 
+// This library shouldn't be used anymore (no class should be added), and per-user libraries like
+// net-utils-service-connectivity or net-utils-framework-wifi should be used instead.
 java_library {
     name: "net-utils-device-common",
     srcs: [
@@ -725,3 +727,34 @@
     ],
     apex_available: ["com.android.wifi"],
 }
+
+genrule {
+    name: "statslog-framework-connectivity-java-gen",
+    tools: ["stats-log-api-gen"],
+    cmd: "$(location stats-log-api-gen) --java $(out) --module connectivity --javaPackage com.android.net.module.util --javaClass FrameworkConnectivityStatsLog",
+    out: ["com/android/net/module/util/FrameworkConnectivityStatsLog.java"],
+}
+
+java_library {
+    name: "net-utils-service-vcn",
+    sdk_version: "module_current",
+    min_sdk_version: "30",
+    srcs: [
+        "device/com/android/net/module/util/HandlerUtils.java",
+    ],
+    libs: [
+        "framework-annotations-lib",
+    ],
+    visibility: [
+        // TODO: b/374174952 Remove it when VCN modularization is released
+        "//frameworks/base/packages/Vcn/service-b",
+
+        "//packages/modules/Connectivity/service-b",
+    ],
+    apex_available: [
+        // TODO: b/374174952 Remove it when VCN modularization is released
+        "//apex_available:platform",
+
+        "com.android.tethering",
+    ],
+}
diff --git a/staticlibs/device/com/android/net/module/util/TimerFdUtils.java b/staticlibs/device/com/android/net/module/util/TimerFdUtils.java
new file mode 100644
index 0000000..310dbc9
--- /dev/null
+++ b/staticlibs/device/com/android/net/module/util/TimerFdUtils.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2024 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 com.android.net.module.util;
+
+import android.os.Process;
+import android.util.Log;
+
+import java.io.IOException;
+
+/**
+ * Contains mostly timerfd functionality.
+ */
+public class TimerFdUtils {
+    static {
+        if (Process.myUid() == Process.SYSTEM_UID) {
+            // This library is part of service-connectivity.jar when in the system server,
+            // so libservice-connectivity.so is the library to load.
+            System.loadLibrary("service-connectivity");
+        } else {
+            System.loadLibrary(JniUtil.getJniLibraryName(TimerFdUtils.class.getPackage()));
+        }
+    }
+
+    private static final String TAG = TimerFdUtils.class.getSimpleName();
+
+    /**
+     * Create a timerfd.
+     *
+     * @throws IOException if the timerfd creation is failed.
+     */
+    private static native int createTimerFd() throws IOException;
+
+    /**
+     * Set given time to the timerfd.
+     *
+     * @param timeMs target time
+     * @throws IOException if setting expiration time is failed.
+     */
+    private static native void setTime(int fd, long timeMs) throws IOException;
+
+    /**
+     * Create a timerfd
+     */
+    static int createTimerFileDescriptor() {
+        try {
+            return createTimerFd();
+        } catch (IOException e) {
+            Log.e(TAG, "createTimerFd failed", e);
+            return -1;
+        }
+    }
+
+    /**
+     * Set expiration time to timerfd
+     */
+    static boolean setExpirationTime(int id, long expirationTimeMs) {
+        try {
+            setTime(id, expirationTimeMs);
+        } catch (IOException e) {
+            Log.e(TAG, "setExpirationTime failed", e);
+            return false;
+        }
+        return true;
+    }
+}
diff --git a/staticlibs/framework/com/android/net/module/util/DnsPacket.java b/staticlibs/framework/com/android/net/module/util/DnsPacket.java
index 63106a1..b0c5e2e 100644
--- a/staticlibs/framework/com/android/net/module/util/DnsPacket.java
+++ b/staticlibs/framework/com/android/net/module/util/DnsPacket.java
@@ -50,7 +50,7 @@
  *
  * @hide
  */
-public abstract class DnsPacket {
+public class DnsPacket {
     /**
      * Type of the canonical name for an alias. Refer to RFC 1035 section 3.2.2.
      */
@@ -515,7 +515,14 @@
     protected final DnsHeader mHeader;
     protected final List<DnsRecord>[] mRecords;
 
-    protected DnsPacket(@NonNull byte[] data) throws ParseException {
+    /**
+     * Returns the list of DNS records for a given section.
+     */
+    public List<DnsRecord> getRecords(@RecordType int section) {
+        return mRecords[section];
+    }
+
+    public DnsPacket(@NonNull byte[] data) throws ParseException {
         if (null == data) {
             throw new ParseException("Parse header failed, null input data");
         }
@@ -548,7 +555,7 @@
      *
      * Note that authority records section and additional records section is not supported.
      */
-    protected DnsPacket(@NonNull DnsHeader header, @NonNull List<DnsRecord> qd,
+    public DnsPacket(@NonNull DnsHeader header, @NonNull List<DnsRecord> qd,
             @NonNull List<DnsRecord> an) {
         mHeader = Objects.requireNonNull(header);
         mRecords = new List[NUM_SECTIONS];
diff --git a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
index f1ff2e4..5d588cc 100644
--- a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
+++ b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
@@ -100,6 +100,15 @@
     public static final int IPV4_ADDR_LEN = 4;
     public static final int IPV4_FLAG_MF = 0x2000;
     public static final int IPV4_FLAG_DF = 0x4000;
+    public static final int IPV4_PROTOCOL_IGMP = 2;
+    public static final int IPV4_IGMP_MIN_SIZE = 8;
+    public static final int IPV4_IGMP_GROUP_RECORD_SIZE = 8;
+    public static final int IPV4_IGMP_TYPE_V1_REPORT = 0x12;
+    public static final int IPV4_IGMP_TYPE_V2_JOIN_REPORT = 0x16;
+    public static final int IPV4_IGMP_TYPE_V2_LEAVE_REPORT = 0x17;
+    public static final int IPV4_IGMP_TYPE_V3_REPORT = 0x22;
+    public static final int IPV4_OPTION_TYPE_ROUTER_ALERT = 0x94;
+    public static final int IPV4_OPTION_LEN_ROUTER_ALERT = 4;
     // getSockOpt() for v4 MTU
     public static final int IP_MTU = 14;
     public static final Inet4Address IPV4_ADDR_ALL = makeInet4Address(
diff --git a/staticlibs/framework/com/android/net/module/util/PermissionUtils.java b/staticlibs/framework/com/android/net/module/util/PermissionUtils.java
index 0d7d96f..0fa91d5 100644
--- a/staticlibs/framework/com/android/net/module/util/PermissionUtils.java
+++ b/staticlibs/framework/com/android/net/module/util/PermissionUtils.java
@@ -192,6 +192,8 @@
 
     /**
      * Enforces that the given package name belongs to the given uid.
+     * Note: b/377758490 - Figure out how to correct this to avoid mis-usage.
+     * Meanwhile, avoid calling this method from the networkstack.
      *
      * @param context {@link android.content.Context} for the process.
      * @param uid User ID to check the package ownership for.
diff --git a/staticlibs/native/bpfmapjni/Android.bp b/staticlibs/native/bpfmapjni/Android.bp
index 969ebd4..9a58a93 100644
--- a/staticlibs/native/bpfmapjni/Android.bp
+++ b/staticlibs/native/bpfmapjni/Android.bp
@@ -26,6 +26,7 @@
     header_libs: [
         "bpf_headers",
         "jni_headers",
+        "libbase_headers",
     ],
     shared_libs: [
         "liblog",
diff --git a/staticlibs/native/bpfmapjni/com_android_net_module_util_BpfMap.cpp b/staticlibs/native/bpfmapjni/com_android_net_module_util_BpfMap.cpp
index 1923ceb..d862f6b 100644
--- a/staticlibs/native/bpfmapjni/com_android_net_module_util_BpfMap.cpp
+++ b/staticlibs/native/bpfmapjni/com_android_net_module_util_BpfMap.cpp
@@ -24,37 +24,38 @@
 #include "nativehelper/scoped_primitive_array.h"
 #include "nativehelper/scoped_utf_chars.h"
 
-#define BPF_FD_JUST_USE_INT
+#include <android-base/unique_fd.h>
 #include "BpfSyscallWrappers.h"
-
 #include "bpf/KernelUtils.h"
 
 namespace android {
 
+using ::android::base::unique_fd;
+
 static jint com_android_net_module_util_BpfMap_nativeBpfFdGet(JNIEnv *env, jclass clazz,
         jstring path, jint mode, jint keySize, jint valueSize) {
     ScopedUtfChars pathname(env, path);
 
-    jint fd = -1;
+    unique_fd fd;
     switch (mode) {
       case 0:
-        fd = bpf::mapRetrieveRW(pathname.c_str());
+        fd.reset(bpf::mapRetrieveRW(pathname.c_str()));
         break;
       case BPF_F_RDONLY:
-        fd = bpf::mapRetrieveRO(pathname.c_str());
+        fd.reset(bpf::mapRetrieveRO(pathname.c_str()));
         break;
       case BPF_F_WRONLY:
-        fd = bpf::mapRetrieveWO(pathname.c_str());
+        fd.reset(bpf::mapRetrieveWO(pathname.c_str()));
         break;
       case BPF_F_RDONLY|BPF_F_WRONLY:
-        fd = bpf::mapRetrieveExclusiveRW(pathname.c_str());
+        fd.reset(bpf::mapRetrieveExclusiveRW(pathname.c_str()));
         break;
       default:
         errno = EINVAL;
         break;
     }
 
-    if (fd < 0) {
+    if (!fd.ok()) {
         jniThrowErrnoException(env, "nativeBpfFdGet", errno);
         return -1;
     }
@@ -62,18 +63,16 @@
     if (bpf::isAtLeastKernelVersion(4, 14, 0)) {
         // These likely fail with -1 and set errno to EINVAL on <4.14
         if (bpf::bpfGetFdKeySize(fd) != keySize) {
-            close(fd);
             jniThrowErrnoException(env, "nativeBpfFdGet KeySize", EBADFD);
             return -1;
         }
         if (bpf::bpfGetFdValueSize(fd) != valueSize) {
-            close(fd);
             jniThrowErrnoException(env, "nativeBpfFdGet ValueSize", EBADFD);
             return -1;
         }
     }
 
-    return fd;
+    return fd.release();
 }
 
 static void com_android_net_module_util_BpfMap_nativeWriteToMapEntry(JNIEnv *env, jobject self,
diff --git a/staticlibs/testutils/Android.bp b/staticlibs/testutils/Android.bp
index f4ed9e4..2a26ef8 100644
--- a/staticlibs/testutils/Android.bp
+++ b/staticlibs/testutils/Android.bp
@@ -97,11 +97,7 @@
         "general-tests",
         "cts",
         "mts-networking",
-        "mcts-networking",
         "mts-tethering",
-        "mcts-tethering",
-        "mcts-wifi",
-        "mcts-dnsresolver",
     ],
     device_common_data: [":ConnectivityTestPreparer"],
 }
diff --git a/staticlibs/testutils/app/connectivitychecker/src/com/android/testutils/connectivitypreparer/CarrierConfigSetupTest.kt b/staticlibs/testutils/app/connectivitychecker/src/com/android/testutils/connectivitypreparer/CarrierConfigSetupTest.kt
index 46e511e..78b34a8 100644
--- a/staticlibs/testutils/app/connectivitychecker/src/com/android/testutils/connectivitypreparer/CarrierConfigSetupTest.kt
+++ b/staticlibs/testutils/app/connectivitychecker/src/com/android/testutils/connectivitypreparer/CarrierConfigSetupTest.kt
@@ -123,7 +123,13 @@
             """telephony/com\.android\.internal\.telephony\.flags\.force_iwlan_mms:""" +
                     """.*ENABLED \(system\)""")
         ParcelFileDescriptor.AutoCloseInputStream(
-            uiAutomation.executeShellCommand("printflags")).bufferedReader().use { reader ->
+            // If the command fails (for example if printflags is missing) this will return false
+            // and the IWLAN disable will be skipped, which should be fine at it only helps with
+            // flakiness.
+            // This uses "sh -c" to cover that case as if "printflags" is used directly and the
+            // binary is missing, the remote end will crash and the InputStream EOF is never
+            // reached, so the read would hang.
+            uiAutomation.executeShellCommand("sh -c printflags")).bufferedReader().use { reader ->
                 return reader.lines().anyMatch {
                     it.contains(flagEnabledRegex)
                 }
diff --git a/staticlibs/testutils/devicetests/com/android/testutils/ConnectivityDiagnosticsCollector.kt b/staticlibs/testutils/devicetests/com/android/testutils/ConnectivityDiagnosticsCollector.kt
index ea86281..9e63910 100644
--- a/staticlibs/testutils/devicetests/com/android/testutils/ConnectivityDiagnosticsCollector.kt
+++ b/staticlibs/testutils/devicetests/com/android/testutils/ConnectivityDiagnosticsCollector.kt
@@ -76,11 +76,13 @@
         private const val MAX_DUMPS = 20
 
         private val TAG = ConnectivityDiagnosticsCollector::class.simpleName
+        @JvmStatic
         var instance: ConnectivityDiagnosticsCollector? = null
     }
 
     private var failureHeader: String? = null
     private val buffer = ByteArrayOutputStream()
+    private val failureHeaderExtras = mutableMapOf<String, Any>()
     private val collectorDir: File by lazy {
         createAndEmptyDirectory(COLLECTOR_DIR)
     }
@@ -218,6 +220,8 @@
         val canUseShell = !isAtLeastS() ||
                 instr.uiAutomation.getAdoptedShellPermissions().isNullOrEmpty()
         val headerObj = JSONObject()
+        failureHeaderExtras.forEach { (k, v) -> headerObj.put(k, v) }
+        failureHeaderExtras.clear()
         if (canUseShell) {
             runAsShell(READ_PRIVILEGED_PHONE_STATE, NETWORK_SETTINGS) {
                 headerObj.apply {
@@ -332,6 +336,15 @@
         }
     }
 
+    /**
+     * Add a key->value attribute to the failure data, to be written to the diagnostics file.
+     *
+     * <p>This is to be called by tests that know they will fail.
+     */
+    fun addFailureAttribute(key: String, value: Any) {
+        failureHeaderExtras[key] = value
+    }
+
     private fun maybeWriteExceptionContext(writer: PrintWriter, exceptionContext: Throwable?) {
         if (exceptionContext == null) return
         writer.println("At: ")
diff --git a/staticlibs/testutils/devicetests/com/android/testutils/DeviceConfigRule.kt b/staticlibs/testutils/devicetests/com/android/testutils/DeviceConfigRule.kt
index 785e55a..044b410 100644
--- a/staticlibs/testutils/devicetests/com/android/testutils/DeviceConfigRule.kt
+++ b/staticlibs/testutils/devicetests/com/android/testutils/DeviceConfigRule.kt
@@ -18,6 +18,7 @@
 
 import android.Manifest.permission.READ_DEVICE_CONFIG
 import android.Manifest.permission.WRITE_DEVICE_CONFIG
+import android.Manifest.permission.WRITE_ALLOWLISTED_DEVICE_CONFIG
 import android.provider.DeviceConfig
 import android.util.Log
 import com.android.modules.utils.build.SdkLevel
@@ -87,7 +88,7 @@
                     }
                     throw e
                 } cleanupStep {
-                    runAsShell(WRITE_DEVICE_CONFIG) {
+                    runAsShell(WRITE_DEVICE_CONFIG, WRITE_ALLOWLISTED_DEVICE_CONFIG) {
                         originalConfig.forEach { (key, value) ->
                             Log.i(TAG, "Resetting config \"${key.second}\" to \"$value\"")
                             DeviceConfig.setProperty(
@@ -116,7 +117,8 @@
      */
     fun setConfig(namespace: String, key: String, value: String?): String? {
         Log.i(TAG, "Setting config \"$key\" to \"$value\"")
-        val readWritePermissions = arrayOf(READ_DEVICE_CONFIG, WRITE_DEVICE_CONFIG)
+        val readWritePermissions =
+            arrayOf(READ_DEVICE_CONFIG, WRITE_DEVICE_CONFIG, WRITE_ALLOWLISTED_DEVICE_CONFIG)
 
         val keyPair = Pair(namespace, key)
         val existingValue = runAsShell(*readWritePermissions) {
diff --git a/tests/common/Android.bp b/tests/common/Android.bp
index bb1009b..60a02fb 100644
--- a/tests/common/Android.bp
+++ b/tests/common/Android.bp
@@ -147,6 +147,7 @@
         // meaning @hide APIs in framework-connectivity are resolved before @SystemApi
         // stubs in framework
         "framework-connectivity.impl",
+        "framework-connectivity-b.impl",
         "framework-connectivity-t.impl",
         "framework-tethering.impl",
         "framework",
diff --git a/tests/cts/hostside/aidl/Android.bp b/tests/cts/hostside/aidl/Android.bp
index 31924f0..ca3e77f 100644
--- a/tests/cts/hostside/aidl/Android.bp
+++ b/tests/cts/hostside/aidl/Android.bp
@@ -19,8 +19,7 @@
 
 java_test_helper_library {
     name: "CtsHostsideNetworkTestsAidl",
-    sdk_version: "current",
-    min_sdk_version: "30",
+    sdk_version: "system_current",
     srcs: [
         "com/android/cts/net/hostside/*.aidl",
         "com/android/cts/net/hostside/*.java",
diff --git a/tests/cts/hostside/aidl/com/android/cts/net/hostside/ITetheringHelper.aidl b/tests/cts/hostside/aidl/com/android/cts/net/hostside/ITetheringHelper.aidl
new file mode 100644
index 0000000..a9f5ed4
--- /dev/null
+++ b/tests/cts/hostside/aidl/com/android/cts/net/hostside/ITetheringHelper.aidl
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2024 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 com.android.cts.net.hostside;
+
+import android.net.TetheringInterface;
+
+interface ITetheringHelper {
+    TetheringInterface getTetheredWifiInterface();
+}
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/TetheringHelperClient.java b/tests/cts/hostside/app/src/com/android/cts/net/hostside/TetheringHelperClient.java
new file mode 100644
index 0000000..5f5ebb0
--- /dev/null
+++ b/tests/cts/hostside/app/src/com/android/cts/net/hostside/TetheringHelperClient.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2024 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 com.android.cts.net.hostside;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.net.TetheringInterface;
+import android.os.ConditionVariable;
+import android.os.IBinder;
+import android.os.RemoteException;
+
+public class TetheringHelperClient {
+    private static final int TIMEOUT_MS = 5000;
+    private static final String PACKAGE = TetheringHelperClient.class.getPackage().getName();
+    private static final String APP2_PACKAGE = PACKAGE + ".app2";
+    private static final String SERVICE_NAME = APP2_PACKAGE + ".TetheringHelperService";
+
+    private Context mContext;
+    private ServiceConnection mServiceConnection;
+    private ITetheringHelper mService;
+
+    public TetheringHelperClient(Context context) {
+        mContext = context;
+    }
+
+    /**
+     * Binds to TetheringHelperService.
+     */
+    public void bind() {
+        if (mService != null) {
+            throw new IllegalStateException("Already bound");
+        }
+
+        final ConditionVariable cv = new ConditionVariable();
+        mServiceConnection = new ServiceConnection() {
+            @Override
+            public void onServiceConnected(ComponentName name, IBinder service) {
+                mService = ITetheringHelper.Stub.asInterface(service);
+                cv.open();
+            }
+            @Override
+            public void onServiceDisconnected(ComponentName name) {
+                mService = null;
+            }
+        };
+
+        final Intent intent = new Intent();
+        intent.setComponent(new ComponentName(APP2_PACKAGE, SERVICE_NAME));
+        mContext.bindService(intent, mServiceConnection, Context.BIND_AUTO_CREATE);
+        cv.block(TIMEOUT_MS);
+        if (mService == null) {
+            throw new IllegalStateException(
+                    "Could not bind to TetheringHelperService after " + TIMEOUT_MS + "ms");
+        }
+    }
+
+    /**
+     * Unbinds from TetheringHelperService.
+     */
+    public void unbind() {
+        if (mService != null) {
+            mContext.unbindService(mServiceConnection);
+        }
+    }
+
+    /**
+     * Returns the tethered Wifi interface as seen from TetheringHelperService.
+     */
+    public TetheringInterface getTetheredWifiInterface() throws RemoteException {
+        return mService.getTetheredWifiInterface();
+    }
+}
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/TetheringTest.java b/tests/cts/hostside/app/src/com/android/cts/net/hostside/TetheringTest.java
new file mode 100644
index 0000000..ad98a29
--- /dev/null
+++ b/tests/cts/hostside/app/src/com/android/cts/net/hostside/TetheringTest.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2024 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 com.android.cts.net.hostside;
+
+import static androidx.test.platform.app.InstrumentationRegistry.getInstrumentation;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+
+import android.content.Context;
+import android.net.TetheringInterface;
+import android.net.cts.util.CtsTetheringUtils;
+import android.net.wifi.SoftApConfiguration;
+import android.net.wifi.WifiSsid;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.nio.charset.StandardCharsets;
+
+public class TetheringTest {
+    private CtsTetheringUtils mCtsTetheringUtils;
+    private TetheringHelperClient mTetheringHelperClient;
+
+    @Before
+    public void setUp() throws Exception {
+        Context targetContext = getInstrumentation().getTargetContext();
+        mCtsTetheringUtils = new CtsTetheringUtils(targetContext);
+        mTetheringHelperClient = new TetheringHelperClient(targetContext);
+        mTetheringHelperClient.bind();
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        mTetheringHelperClient.unbind();
+    }
+
+    /**
+     * Starts Wifi tethering and tests that the SoftApConfiguration is redacted from
+     * TetheringEventCallback for other apps.
+     */
+    @Test
+    public void testSoftApConfigurationRedactedForOtherUids() throws Exception {
+        final CtsTetheringUtils.TestTetheringEventCallback tetherEventCallback =
+                mCtsTetheringUtils.registerTetheringEventCallback();
+        SoftApConfiguration softApConfig = new SoftApConfiguration.Builder()
+                .setWifiSsid(WifiSsid.fromBytes("This is an SSID!"
+                        .getBytes(StandardCharsets.UTF_8))).build();
+        final TetheringInterface tetheringInterface =
+                mCtsTetheringUtils.startWifiTethering(tetherEventCallback, softApConfig);
+        assertNotNull(tetheringInterface);
+        assertEquals(softApConfig, tetheringInterface.getSoftApConfiguration());
+        try {
+            TetheringInterface tetheringInterfaceForApp2 =
+                    mTetheringHelperClient.getTetheredWifiInterface();
+            assertNotNull(tetheringInterfaceForApp2);
+            assertNull(tetheringInterfaceForApp2.getSoftApConfiguration());
+            assertEquals(
+                    tetheringInterface.getInterface(), tetheringInterfaceForApp2.getInterface());
+        } finally {
+            mCtsTetheringUtils.stopWifiTethering(tetherEventCallback);
+        }
+    }
+}
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java b/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
index d05a8d0..3430196 100755
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
+++ b/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
@@ -20,6 +20,7 @@
 import static android.Manifest.permission.NETWORK_SETTINGS;
 import static android.Manifest.permission.READ_DEVICE_CONFIG;
 import static android.Manifest.permission.WRITE_DEVICE_CONFIG;
+import static android.Manifest.permission.WRITE_ALLOWLISTED_DEVICE_CONFIG;
 import static android.content.Context.RECEIVER_EXPORTED;
 import static android.content.pm.PackageManager.FEATURE_TELEPHONY;
 import static android.content.pm.PackageManager.FEATURE_WIFI;
@@ -1209,7 +1210,7 @@
                     AUTOMATIC_ON_OFF_KEEPALIVE_VERSION,
                     AUTOMATIC_ON_OFF_KEEPALIVE_ENABLED, false /* makeDefault */);
             return mode;
-        }, READ_DEVICE_CONFIG, WRITE_DEVICE_CONFIG);
+        }, READ_DEVICE_CONFIG, WRITE_DEVICE_CONFIG, WRITE_ALLOWLISTED_DEVICE_CONFIG);
 
         final IpSecManager ipSec = mTargetContext.getSystemService(IpSecManager.class);
         SocketKeepalive kp = null;
@@ -1249,7 +1250,7 @@
                                 AUTOMATIC_ON_OFF_KEEPALIVE_VERSION,
                                 origMode, false);
                 mCM.setTestLowTcpPollingTimerForKeepalive(0);
-            }, WRITE_DEVICE_CONFIG, NETWORK_SETTINGS);
+            }, WRITE_DEVICE_CONFIG, WRITE_ALLOWLISTED_DEVICE_CONFIG, NETWORK_SETTINGS);
         }
     }
 
diff --git a/tests/cts/hostside/app2/AndroidManifest.xml b/tests/cts/hostside/app2/AndroidManifest.xml
index 412b307..6ccaf4f 100644
--- a/tests/cts/hostside/app2/AndroidManifest.xml
+++ b/tests/cts/hostside/app2/AndroidManifest.xml
@@ -42,6 +42,8 @@
             android:debuggable="true">
         <service android:name=".RemoteSocketFactoryService"
              android:exported="true"/>
+        <service android:name=".TetheringHelperService"
+             android:exported="true"/>
     </application>
 
     <!--
diff --git a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/TetheringHelperService.java b/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/TetheringHelperService.java
new file mode 100644
index 0000000..56a8cbb
--- /dev/null
+++ b/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/TetheringHelperService.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2024 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 com.android.cts.net.hostside.app2;
+
+
+import static android.net.TetheringManager.TETHERING_WIFI;
+
+import android.app.Service;
+import android.content.Intent;
+import android.net.TetheringInterface;
+import android.net.TetheringManager;
+import android.os.IBinder;
+
+import androidx.annotation.NonNull;
+
+import com.android.cts.net.hostside.ITetheringHelper;
+
+import java.util.Set;
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.TimeUnit;
+
+public class TetheringHelperService extends Service {
+    private static final String TAG = TetheringHelperService.class.getSimpleName();
+
+    private ITetheringHelper.Stub mBinder = new ITetheringHelper.Stub() {
+        public TetheringInterface getTetheredWifiInterface() {
+            ArrayBlockingQueue<TetheringInterface> queue = new ArrayBlockingQueue<>(1);
+            TetheringManager.TetheringEventCallback callback =
+                    new TetheringManager.TetheringEventCallback() {
+                        @Override
+                        public void onTetheredInterfacesChanged(
+                                @NonNull Set<TetheringInterface> interfaces) {
+                            for (TetheringInterface iface : interfaces) {
+                                if (iface.getType() == TETHERING_WIFI) {
+                                    queue.offer(iface);
+                                    break;
+                                }
+                            }
+                        }
+                    };
+            TetheringManager tm =
+                    TetheringHelperService.this.getSystemService(TetheringManager.class);
+            tm.registerTetheringEventCallback(Runnable::run, callback);
+            TetheringInterface iface;
+            try {
+                iface = queue.poll(5, TimeUnit.SECONDS);
+            } catch (InterruptedException e) {
+                throw new IllegalStateException("Wait for wifi TetheredInterface interrupted");
+            } finally {
+                tm.unregisterTetheringEventCallback(callback);
+            }
+            if (iface == null) {
+                throw new IllegalStateException(
+                        "No wifi TetheredInterface received after 5 seconds");
+            }
+            return iface;
+        }
+    };
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return mBinder;
+    }
+}
diff --git a/tests/cts/hostside/src/com/android/cts/net/HostsideTetheringTests.java b/tests/cts/hostside/src/com/android/cts/net/HostsideTetheringTests.java
new file mode 100644
index 0000000..d73e01a
--- /dev/null
+++ b/tests/cts/hostside/src/com/android/cts/net/HostsideTetheringTests.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2024 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 com.android.cts.net;
+
+import com.android.tradefed.device.DeviceNotAvailableException;
+import com.android.tradefed.invoker.TestInformation;
+import com.android.tradefed.testtype.DeviceJUnit4ClassRunner;
+import com.android.tradefed.testtype.junit4.AfterClassWithInfo;
+import com.android.tradefed.testtype.junit4.BeforeClassWithInfo;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(DeviceJUnit4ClassRunner.class)
+public class HostsideTetheringTests extends HostsideNetworkTestCase {
+    /**
+     * Set up the test once before running all the tests.
+     */
+    @BeforeClassWithInfo
+    public static void setUpOnce(TestInformation testInfo) throws Exception {
+        uninstallPackage(testInfo, TEST_APP2_PKG, false);
+        installPackage(testInfo, TEST_APP2_APK);
+    }
+
+    /**
+     * Tear down the test once after running all the tests.
+     */
+    @AfterClassWithInfo
+    public static void tearDownOnce(TestInformation testInfo)
+            throws DeviceNotAvailableException {
+        uninstallPackage(testInfo, TEST_APP2_PKG, true);
+    }
+
+    @Test
+    public void testSoftApConfigurationRedactedForOtherApps() throws Exception {
+        runDeviceTests(TEST_PKG, TEST_PKG + ".TetheringTest",
+                "testSoftApConfigurationRedactedForOtherUids");
+    }
+}
diff --git a/tests/cts/net/Android.bp b/tests/cts/net/Android.bp
index 9e57f69..a9ac29c 100644
--- a/tests/cts/net/Android.bp
+++ b/tests/cts/net/Android.bp
@@ -96,14 +96,8 @@
     ],
     test_suites: [
         "cts",
-        "mts-dnsresolver",
-        "mts-networking",
         "mts-tethering",
-        "mts-wifi",
-        "mcts-dnsresolver",
-        "mcts-networking",
         "mcts-tethering",
-        "mcts-wifi",
         "general-tests",
     ],
 }
diff --git a/tests/cts/net/AndroidTestTemplate.xml b/tests/cts/net/AndroidTestTemplate.xml
index 7590a2b..55b6494 100644
--- a/tests/cts/net/AndroidTestTemplate.xml
+++ b/tests/cts/net/AndroidTestTemplate.xml
@@ -19,6 +19,7 @@
     <option name="config-descriptor:metadata" key="parameter" value="instant_app" />
     <option name="config-descriptor:metadata" key="parameter" value="not_multi_abi" />
     <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
+    <option name="config-descriptor:metadata" key="parameter" value="secondary_user_on_secondary_display" />
 
     <option name="config-descriptor:metadata" key="mainline-param" value="CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex" />
     <option name="config-descriptor:metadata" key="mainline-param" value="CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk" />
@@ -60,8 +61,7 @@
     </test>
     <metrics_collector class="com.android.tradefed.device.metric.FilePullerLogCollector">
         <!-- Pattern matching the fileKey used by ConnectivityDiagnosticsCollector when calling addFileMetric -->
-        <option name="pull-pattern-keys" value="com.android.testutils.ConnectivityDiagnosticsCollector.*" />
-        <option name="log-data-type" value="CONNDIAG" />
+        <option name="pull-pattern-keys" value="com.android.testutils.ConnectivityDiagnosticsCollector.*"/>
         <option name="collect-on-run-ended-only" value="true" />
     </metrics_collector>
     <!-- When this test is run in a Mainline context (e.g. with `mts-tradefed`), only enable it if
diff --git a/tests/cts/net/jni/NativeMultinetworkJni.cpp b/tests/cts/net/jni/NativeMultinetworkJni.cpp
index f2214a3..1d848ec 100644
--- a/tests/cts/net/jni/NativeMultinetworkJni.cpp
+++ b/tests/cts/net/jni/NativeMultinetworkJni.cpp
@@ -415,9 +415,17 @@
     strlcpy(dst, buf, size);
 }
 
+static jobject create_query_test_result(JNIEnv* env, uint16_t src_port, int attempts, int errnum) {
+    jclass clazz = env->FindClass(
+        "android/net/cts/MultinetworkApiTest$QueryTestResult");
+    jmethodID ctor = env->GetMethodID(clazz, "<init>", "(III)V");
+
+    return env->NewObject(clazz, ctor, src_port, attempts, errnum);
+}
+
 extern "C"
-JNIEXPORT jint Java_android_net_cts_MultinetworkApiTest_runDatagramCheck(
-        JNIEnv*, jclass, jlong nethandle) {
+JNIEXPORT jobject Java_android_net_cts_MultinetworkApiTest_runDatagramCheck(
+        JNIEnv* env, jclass, jlong nethandle, jint src_port) {
     const struct addrinfo kHints = {
         .ai_flags = AI_ADDRCONFIG,
         .ai_family = AF_UNSPEC,
@@ -433,7 +441,7 @@
         LOGD("android_getaddrinfofornetwork(%llu, %s) returned rval=%d errno=%d",
               handle, kHostname, rval, errno);
         freeaddrinfo(res);
-        return -errno;
+        return create_query_test_result(env, 0, 0, errno);
     }
 
     // Rely upon getaddrinfo sorting the best destination to the front.
@@ -442,7 +450,7 @@
         LOGD("socket(%d, %d, %d) failed, errno=%d",
               res->ai_family, res->ai_socktype, res->ai_protocol, errno);
         freeaddrinfo(res);
-        return -errno;
+        return create_query_test_result(env, 0, 0, errno);
     }
 
     rval = android_setsocknetwork(handle, fd);
@@ -451,7 +459,31 @@
     if (rval != 0) {
         close(fd);
         freeaddrinfo(res);
-        return -errno;
+        return create_query_test_result(env, 0, 0, errno);
+    }
+
+    sockaddr_storage src_addr;
+    socklen_t src_addrlen = sizeof(src_addr);
+    if (src_port) {
+        if (res->ai_family == AF_INET6) {
+            *reinterpret_cast<sockaddr_in6*>(&src_addr) = (sockaddr_in6) {
+                .sin6_family = AF_INET6,
+                .sin6_port = htons(src_port),
+                .sin6_addr = in6addr_any,
+            };
+        } else {
+            *reinterpret_cast<sockaddr_in*>(&src_addr) = (sockaddr_in) {
+                .sin_family = AF_INET,
+                .sin_port = htons(src_port),
+                .sin_addr = { .s_addr = INADDR_ANY },
+            };
+        }
+        if (bind(fd, (sockaddr *)&src_addr, src_addrlen) != 0) {
+            LOGD("Error binding to port %d", src_port);
+            close(fd);
+            freeaddrinfo(res);
+            return create_query_test_result(env, 0, 0, errno);
+        }
     }
 
     char addrstr[kSockaddrStrLen+1];
@@ -462,19 +494,28 @@
     if (rval != 0) {
         close(fd);
         freeaddrinfo(res);
-        return -errno;
+        return create_query_test_result(env, 0, 0, errno);
     }
     freeaddrinfo(res);
 
-    struct sockaddr_storage src_addr;
-    socklen_t src_addrlen = sizeof(src_addr);
     if (getsockname(fd, (struct sockaddr *)&src_addr, &src_addrlen) != 0) {
         close(fd);
-        return -errno;
+        return create_query_test_result(env, 0, 0, errno);
     }
     sockaddr_ntop((const struct sockaddr *)&src_addr, sizeof(src_addr), addrstr, sizeof(addrstr));
     LOGD("... from %s", addrstr);
 
+    uint16_t socket_src_port;
+    if (res->ai_family == AF_INET6) {
+        socket_src_port = ntohs(reinterpret_cast<sockaddr_in6*>(&src_addr)->sin6_port);
+    } else if (src_addr.ss_family == AF_INET) {
+        socket_src_port = ntohs(reinterpret_cast<sockaddr_in*>(&src_addr)->sin_port);
+    } else {
+        LOGD("Invalid source address family %d", src_addr.ss_family);
+        close(fd);
+        return create_query_test_result(env, 0, 0, EAFNOSUPPORT);
+    }
+
     // Don't let reads or writes block indefinitely.
     const struct timeval timeo = { 2, 0 };  // 2 seconds
     setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &timeo, sizeof(timeo));
@@ -503,7 +544,7 @@
             errnum = errno;
             LOGD("send(QUIC packet) returned sent=%zd, errno=%d", sent, errnum);
             close(fd);
-            return -errnum;
+            return create_query_test_result(env, socket_src_port, i + 1, errnum);
         }
 
         rcvd = recv(fd, response, sizeof(response), 0);
@@ -521,18 +562,19 @@
             LOGD("Does this network block UDP port %s?", kPort);
         }
         close(fd);
-        return -EPROTO;
+        return create_query_test_result(env, socket_src_port, i + 1,
+                rcvd <= 0 ? errnum : EPROTO);
     }
 
     int conn_id_cmp = memcmp(quic_packet + 6, response + 7, 8);
     if (conn_id_cmp != 0) {
         LOGD("sent and received connection IDs do not match");
         close(fd);
-        return -EPROTO;
+        return create_query_test_result(env, socket_src_port, i + 1, EPROTO);
     }
 
     // TODO: Replace this quick 'n' dirty test with proper QUIC-capable code.
 
     close(fd);
-    return 0;
+    return create_query_test_result(env, socket_src_port, i + 1, 0);
 }
diff --git a/tests/cts/net/native/dns/Android.bp b/tests/cts/net/native/dns/Android.bp
index de4a3bf..8138598 100644
--- a/tests/cts/net/native/dns/Android.bp
+++ b/tests/cts/net/native/dns/Android.bp
@@ -62,8 +62,6 @@
         "cts",
         "general-tests",
         "mts-dnsresolver",
-        "mts-networking",
         "mcts-dnsresolver",
-        "mcts-networking",
     ],
 }
diff --git a/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
index 9ac2c67..8e77b5d 100644
--- a/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
+++ b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
@@ -19,6 +19,7 @@
 
 package android.net.cts
 
+import android.Manifest.permission.WRITE_ALLOWLISTED_DEVICE_CONFIG
 import android.Manifest.permission.WRITE_DEVICE_CONFIG
 import android.content.pm.PackageManager.FEATURE_WIFI
 import android.net.ConnectivityManager
@@ -165,7 +166,7 @@
             // created.
             // APF adb cmds are only implemented in ApfFilter.java. Enable experiment to prevent
             // LegacyApfFilter.java from being used.
-            runAsShell(WRITE_DEVICE_CONFIG) {
+            runAsShell(WRITE_DEVICE_CONFIG, WRITE_ALLOWLISTED_DEVICE_CONFIG) {
                 DeviceConfig.setProperty(
                         NAMESPACE_CONNECTIVITY,
                         APF_NEW_RA_FILTER_VERSION,
diff --git a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
index 3a8252a..88309ed 100644
--- a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
@@ -145,6 +145,7 @@
 import android.net.ConnectivityManager;
 import android.net.ConnectivityManager.NetworkCallback;
 import android.net.ConnectivitySettingsManager;
+import android.net.DnsResolver;
 import android.net.InetAddresses;
 import android.net.IpSecManager;
 import android.net.IpSecManager.UdpEncapsulationSocket;
@@ -201,6 +202,7 @@
 import com.android.internal.util.ArrayUtils;
 import com.android.modules.utils.build.SdkLevel;
 import com.android.net.module.util.CollectionUtils;
+import com.android.net.module.util.DnsPacket;
 import com.android.networkstack.apishim.ConnectivityManagerShimImpl;
 import com.android.networkstack.apishim.ConstantsShim;
 import com.android.networkstack.apishim.NetworkInformationShimImpl;
@@ -249,7 +251,6 @@
 import java.net.Socket;
 import java.net.SocketException;
 import java.net.URL;
-import java.net.UnknownHostException;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -306,6 +307,7 @@
     private static final int LISTEN_ACTIVITY_TIMEOUT_MS = 30_000;
     private static final int NO_CALLBACK_TIMEOUT_MS = 100;
     private static final int NETWORK_REQUEST_TIMEOUT_MS = 3000;
+    private static final int DNS_REQUEST_TIMEOUT_MS = 1000;
     private static final int SOCKET_TIMEOUT_MS = 100;
     private static final int NUM_TRIES_MULTIPATH_PREF_CHECK = 20;
     private static final long INTERVAL_MULTIPATH_PREF_CHECK_MS = 500;
@@ -861,6 +863,55 @@
         });
     }
 
+    @NonNull
+    private static String getDeviceIpv6AddressThroughDnsQuery(Network network) throws Exception {
+        final InetAddress dnsAddr = getAddrByName("ns1.google.com", AF_INET6);
+        assertNotNull("IPv6 address for ns1.google.com should not be null", dnsAddr);
+
+        try (DatagramSocket udpSocket = new DatagramSocket()) {
+            network.bindSocket(udpSocket);
+
+            final DnsPacket queryDnsPkt = new DnsPacket(
+                    new DnsPacket.DnsHeader(new Random().nextInt(), DnsResolver.FLAG_EMPTY,
+                            1 /* qdcount */,
+                            0 /* ancount */),
+                    List.of(DnsPacket.DnsRecord.makeQuestion("o-o.myaddr.l.google.com",
+                            DnsResolver.TYPE_TXT, DnsResolver.CLASS_IN)),
+                    List.of() /* an */
+            );
+            final byte[] queryDnsRawBytes = queryDnsPkt.getBytes();
+            final byte[] receiveBuffer = new byte[1500];
+            final int maxRetry = 3;
+            for (int attempt = 1; attempt <= maxRetry; ++attempt) {
+                try {
+                    final DatagramPacket queryUdpPkt = new DatagramPacket(queryDnsRawBytes,
+                            queryDnsRawBytes.length, dnsAddr, 53 /* port */);
+                    udpSocket.send(queryUdpPkt);
+
+                    final DatagramPacket replyUdpPkt = new DatagramPacket(receiveBuffer,
+                            receiveBuffer.length);
+                    udpSocket.setSoTimeout(DNS_REQUEST_TIMEOUT_MS);
+                    udpSocket.receive(replyUdpPkt);
+                    break;
+                } catch (IOException e) {
+                    if (attempt == maxRetry) {
+                        throw e; // If the last attempt fails, rethrow the exception.
+                    } else {
+                        Log.e(TAG, "DNS request failed (attempt " + attempt + ")" + e);
+                    }
+                }
+            }
+
+            final DnsPacket replyDnsPkt = new DnsPacket(receiveBuffer);
+            final DnsPacket.DnsRecord answerRecord = replyDnsPkt.getRecords(
+                    DnsPacket.ANSECTION).get(0);
+            final byte[] txtReplyRecord = answerRecord.getRR();
+            final byte dataLength = txtReplyRecord[0];
+            assertEquals(dataLength, txtReplyRecord.length - 1);
+            return new String(Arrays.copyOfRange(txtReplyRecord, 1, txtReplyRecord.length));
+        }
+    }
+
     /**
      * Tests that connections can be opened on WiFi and cellphone networks,
      * and that they are made from different IP addresses.
@@ -886,8 +937,31 @@
 
         // Verify that the IP addresses that the requests appeared to come from are actually on the
         // respective networks.
-        assertOnNetwork(wifiAddressString, wifiNetwork);
-        assertOnNetwork(cellAddressString, cellNetwork);
+        final InetAddress wifiAddress = InetAddresses.parseNumericAddress(wifiAddressString);
+        final LinkProperties wifiLinkProperties = mCm.getLinkProperties(wifiNetwork);
+        // To make sure that the request went out on the right network, check that
+        // the IP address seen by the server is assigned to the expected network.
+        // We can only do this for IPv6 addresses, because in IPv4 we will likely
+        // have a private IPv4 address, and that won't match what the server sees.
+        if (wifiAddress instanceof Inet6Address) {
+            assertContains(wifiLinkProperties.getAddresses(), wifiAddress);
+        }
+
+        final LinkProperties cellLinkProperties = mCm.getLinkProperties(cellNetwork);
+        final InetAddress cellAddress = InetAddresses.parseNumericAddress(cellAddressString);
+        final List<InetAddress> cellNetworkAddresses = cellLinkProperties.getAddresses();
+        // In userdebug build, on cellular network, if the onNetwork check failed, we also try to
+        // re-verify it by obtaining the IP address through DNS query.
+        boolean isUserDebug = Build.isDebuggable();
+        if (cellAddress instanceof Inet6Address) {
+            if (isUserDebug && !cellNetworkAddresses.contains(cellAddress)) {
+                final InetAddress ipv6AddressThroughDns = InetAddresses.parseNumericAddress(
+                        getDeviceIpv6AddressThroughDnsQuery(cellNetwork));
+                assertContains(cellNetworkAddresses, ipv6AddressThroughDns);
+            } else {
+                assertContains(cellNetworkAddresses, cellAddress);
+            }
+        }
 
         assertFalse("Unexpectedly equal: " + wifiNetwork, wifiNetwork.equals(cellNetwork));
     }
@@ -919,17 +993,6 @@
         }
     }
 
-    private void assertOnNetwork(String adressString, Network network) throws UnknownHostException {
-        InetAddress address = InetAddress.getByName(adressString);
-        LinkProperties linkProperties = mCm.getLinkProperties(network);
-        // To make sure that the request went out on the right network, check that
-        // the IP address seen by the server is assigned to the expected network.
-        // We can only do this for IPv6 addresses, because in IPv4 we will likely
-        // have a private IPv4 address, and that won't match what the server sees.
-        if (address instanceof Inet6Address) {
-            assertContains(linkProperties.getAddresses(), address);
-        }
-    }
 
     private static<T> void assertContains(Collection<T> collection, T element) {
         assertTrue(element + " not found in " + collection, collection.contains(element));
@@ -1713,7 +1776,8 @@
         }
     }
 
-    private InetAddress getAddrByName(final String hostname, final int family) throws Exception {
+    private static InetAddress getAddrByName(final String hostname, final int family)
+            throws Exception {
         final InetAddress[] allAddrs = InetAddress.getAllByName(hostname);
         for (InetAddress addr : allAddrs) {
             if (family == AF_INET && addr instanceof Inet4Address) return addr;
diff --git a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
index 1e2a212..9be579b 100644
--- a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
+++ b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
@@ -145,6 +145,8 @@
 
     private var tetheredInterfaceRequest: TetheredInterfaceRequest? = null
 
+    private var ethernetEnabled = true
+
     private class EthernetTestInterface(
         context: Context,
         private val handler: Handler,
@@ -428,7 +430,7 @@
 
         // when an interface comes up, we should always see a down cb before an up cb.
         ifaceListener.eventuallyExpect(iface, STATE_LINK_DOWN, ROLE_CLIENT)
-        if (hasCarrier) {
+        if (hasCarrier && ethernetEnabled) {
             ifaceListener.expectCallback(iface, STATE_LINK_UP, ROLE_CLIENT)
         }
         return iface
@@ -514,6 +516,7 @@
     private fun setEthernetEnabled(enabled: Boolean) {
         runAsShell(NETWORK_SETTINGS) { em.setEthernetEnabled(enabled) }
 
+        ethernetEnabled = enabled
         val listener = EthernetStateListener()
         addEthernetStateListener(listener)
         listener.eventuallyExpect(if (enabled) ETHERNET_STATE_ENABLED else ETHERNET_STATE_DISABLED)
@@ -600,26 +603,6 @@
         }
     }
 
-    @Test
-    fun testCallbacks_withRunningInterface() {
-        assumeFalse(isAdbOverEthernet())
-        // Only run this test when no non-restricted / physical interfaces are present.
-        assumeNoInterfaceForTetheringAvailable()
-
-        val iface = createInterface()
-        val listener = EthernetStateListener()
-        addInterfaceStateListener(listener)
-        listener.eventuallyExpect(iface, STATE_LINK_UP, ROLE_CLIENT)
-
-        // Remove running interface. The interface stays running but is no longer tracked.
-        setEthernetEnabled(false)
-        listener.expectCallback(iface, STATE_ABSENT, ROLE_NONE)
-
-        setEthernetEnabled(true)
-        listener.expectCallback(iface, STATE_LINK_UP, ROLE_CLIENT)
-        listener.assertNoCallback()
-    }
-
     private fun assumeNoInterfaceForTetheringAvailable() {
         // Interfaces that have configured NetworkCapabilities will never be used for tethering,
         // see aosp/2123900.
@@ -911,6 +894,30 @@
     }
 
     @Test
+    fun testEnableDisableInterface_disableEnableEthernet() {
+        val iface = createInterface()
+        val listener = EthernetStateListener()
+        addInterfaceStateListener(listener)
+        listener.eventuallyExpect(iface, STATE_LINK_UP, ROLE_CLIENT)
+
+        // When ethernet is disabled, interface should be down and enable/disableInterface()
+        // should not bring the interfaces up.
+        setEthernetEnabled(false)
+        listener.eventuallyExpect(iface, STATE_LINK_DOWN, ROLE_CLIENT)
+        enableInterface(iface).expectError()
+        disableInterface(iface).expectError()
+        listener.assertNoCallback()
+
+        // When ethernet is enabled, enable/disableInterface() should succeed.
+        setEthernetEnabled(true)
+        listener.eventuallyExpect(iface, STATE_LINK_UP, ROLE_CLIENT)
+        disableInterface(iface).expectResult(iface.name)
+        listener.eventuallyExpect(iface, STATE_LINK_DOWN, ROLE_CLIENT)
+        enableInterface(iface).expectResult(iface.name)
+        listener.eventuallyExpect(iface, STATE_LINK_UP, ROLE_CLIENT)
+    }
+
+    @Test
     fun testUpdateConfiguration_forBothIpConfigAndCapabilities() {
         val iface = createInterface()
         val cb = requestNetwork(ETH_REQUEST.copyWithEthernetSpecifier(iface.name))
@@ -1018,4 +1025,68 @@
         cb.eventuallyExpectCapabilities(TEST_CAPS)
         cb.eventuallyExpectLpForStaticConfig(STATIC_IP_CONFIGURATION.staticIpConfiguration)
     }
+
+    @Test
+    fun testAddInterface_disableEnableEthernet() {
+        val listener = EthernetStateListener()
+        addInterfaceStateListener(listener)
+
+        // When ethernet is disabled, newly added interfaces should not be brought up.
+        setEthernetEnabled(false)
+        val iface = createInterface(/* hasCarrier */ true)
+        listener.eventuallyExpect(iface, STATE_LINK_DOWN, ROLE_CLIENT)
+
+        // When ethernet is re-enabled after interface is added, it will be brought up.
+        setEthernetEnabled(true)
+        listener.eventuallyExpect(iface, STATE_LINK_UP, ROLE_CLIENT)
+    }
+
+
+    @Test
+    fun testRemoveInterface_disableEnableEthernet() {
+        // Set up 2 interfaces for testing
+        val iface1 = createInterface()
+        val listener = EthernetStateListener()
+        addInterfaceStateListener(listener)
+        listener.eventuallyExpect(iface1, STATE_LINK_UP, ROLE_CLIENT)
+        val iface2 = createInterface()
+        listener.eventuallyExpect(iface2, STATE_LINK_UP, ROLE_CLIENT)
+
+        // Removing interfaces when ethernet is enabled will first send link down, then
+        // STATE_ABSENT/ROLE_NONE.
+        removeInterface(iface1)
+        listener.expectCallback(iface1, STATE_LINK_DOWN, ROLE_CLIENT)
+        listener.expectCallback(iface1, STATE_ABSENT, ROLE_NONE)
+
+        // Removing interfaces after ethernet is disabled will first send link down when ethernet is
+        // disabled, then STATE_ABSENT/ROLE_NONE when interface is removed.
+        setEthernetEnabled(false)
+        listener.expectCallback(iface2, STATE_LINK_DOWN, ROLE_CLIENT)
+        removeInterface(iface2)
+        listener.expectCallback(iface2, STATE_ABSENT, ROLE_NONE)
+    }
+
+    @Test
+    fun testSetTetheringInterfaceMode_disableEnableEthernet() {
+        val listener = EthernetStateListener()
+        addInterfaceStateListener(listener)
+
+        val iface = createInterface()
+        requestTetheredInterface().expectOnAvailable()
+        listener.eventuallyExpect(iface, STATE_LINK_UP, ROLE_SERVER)
+
+        // (b/234743836): Currently the state of server mode interfaces always returns true due to
+        // that interface state for server mode interfaces is not tracked properly.
+        // So we do not get any state change when disabling ethernet.
+        setEthernetEnabled(false)
+        listener.assertNoCallback()
+
+        // When ethernet is disabled, change interface mode will not bring the interface up.
+        releaseTetheredInterface()
+        listener.eventuallyExpect(iface, STATE_LINK_DOWN, ROLE_CLIENT)
+
+        // When ethernet is re-enabled, interface will be brought up.
+        setEthernetEnabled(true)
+        listener.eventuallyExpect(iface, STATE_LINK_UP, ROLE_CLIENT)
+    }
 }
diff --git a/tests/cts/net/src/android/net/cts/MultinetworkApiTest.java b/tests/cts/net/src/android/net/cts/MultinetworkApiTest.java
index 2c7d5c6..c67443e 100644
--- a/tests/cts/net/src/android/net/cts/MultinetworkApiTest.java
+++ b/tests/cts/net/src/android/net/cts/MultinetworkApiTest.java
@@ -39,10 +39,13 @@
 import android.system.ErrnoException;
 import android.system.OsConstants;
 import android.util.ArraySet;
+import android.util.Log;
 
 import androidx.test.platform.app.InstrumentationRegistry;
 
+import com.android.net.module.util.CollectionUtils;
 import com.android.testutils.AutoReleaseNetworkCallbackRule;
+import com.android.testutils.ConnectivityDiagnosticsCollector;
 import com.android.testutils.DevSdkIgnoreRunner;
 import com.android.testutils.DeviceConfigRule;
 
@@ -51,6 +54,8 @@
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Set;
 
 @DevSdkIgnoreRunner.RestoreDefaultNetwork
@@ -70,13 +75,34 @@
     private static final String TAG = "MultinetworkNativeApiTest";
     static final String GOOGLE_PRIVATE_DNS_SERVER = "dns.google";
 
+    public static class QueryTestResult {
+        public final int sourcePort;
+        public final int attempts;
+        public final int errNo;
+
+        public QueryTestResult(int sourcePort, int attempts, int errNo) {
+            this.sourcePort = sourcePort;
+            this.attempts = attempts;
+            this.errNo = errNo;
+        }
+
+        @Override
+        public String toString() {
+            return "QueryTestResult{"
+                    + "sourcePort=" + sourcePort
+                    + ", attempts=" + attempts
+                    + ", errNo=" + errNo
+                    + '}';
+        }
+    }
+
     /**
      * @return 0 on success
      */
     private static native int runGetaddrinfoCheck(long networkHandle);
     private static native int runSetprocnetwork(long networkHandle);
     private static native int runSetsocknetwork(long networkHandle);
-    private static native int runDatagramCheck(long networkHandle);
+    private static native QueryTestResult runDatagramCheck(long networkHandle, int sourcePort);
     private static native void runResNapiMalformedCheck(long networkHandle);
     private static native void runResNcancelCheck(long networkHandle);
     private static native void runResNqueryCheck(long networkHandle);
@@ -165,14 +191,69 @@
         }
     }
 
+    private void runNativeDatagramTransmissionDiagnostics(Network network,
+            QueryTestResult failedResult) {
+        final ConnectivityDiagnosticsCollector collector = ConnectivityDiagnosticsCollector
+                .getInstance();
+        if (collector == null) {
+            Log.e(TAG, "Missing ConnectivityDiagnosticsCollector, not adding diagnostics");
+            return;
+        }
+
+        final int numReruns = 10;
+        final ArrayList<QueryTestResult> reruns = new ArrayList<>(numReruns);
+        for (int i = 0; i < numReruns; i++) {
+            final QueryTestResult rerunResult =
+                    runDatagramCheck(network.getNetworkHandle(), 0 /* sourcePort */);
+            Log.d(TAG, "Rerun result " + i + ": " + rerunResult);
+            reruns.add(rerunResult);
+        }
+        // Rerun on the original port after trying the other ports, to check that the results are
+        // consistent, as opposed to the network recovering halfway through.
+        int originalPortFailedReruns = 0;
+        for (int i = 0; i < numReruns; i++) {
+            final QueryTestResult originalPortRerun = runDatagramCheck(network.getNetworkHandle(),
+                    failedResult.sourcePort);
+            Log.d(TAG, "Rerun result " + i + " with original port: " + originalPortRerun);
+            if (originalPortRerun.errNo != 0) {
+                originalPortFailedReruns++;
+            }
+        }
+
+        final int noRetrySuccessResults = reruns.stream()
+                .filter(result -> result.errNo == 0 && result.attempts == 1)
+                .mapToInt(result -> 1)
+                .sum();
+        final int failedResults = reruns.stream()
+                .filter(result -> result.errNo != 0)
+                .mapToInt(result -> 1)
+                .sum();
+        collector.addFailureAttribute("numReruns", numReruns);
+        collector.addFailureAttribute("noRetrySuccessReruns", noRetrySuccessResults);
+        collector.addFailureAttribute("failedReruns", failedResults);
+        collector.addFailureAttribute("originalPortFailedReruns", originalPortFailedReruns);
+    }
+
     @Test
     public void testNativeDatagramTransmission() throws Exception {
         for (Network network : getTestableNetworks()) {
-            int errno = runDatagramCheck(network.getNetworkHandle());
-            if (errno != 0) {
-                throw new ErrnoException(
-                        "DatagramCheck on " + mCM.getNetworkInfo(network), -errno);
+            final QueryTestResult result = runDatagramCheck(network.getNetworkHandle(),
+                    0 /* sourcePort */);
+            if (result.errNo == 0) {
+                continue;
             }
+            final NetworkCapabilities nc = mCM.getNetworkCapabilities(network);
+            final int[] transports = nc != null ? nc.getTransportTypes() : null;
+            if (CollectionUtils.contains(transports, TRANSPORT_WIFI)) {
+                runNativeDatagramTransmissionDiagnostics(network, result);
+            }
+
+            // Log the whole result (with source port and attempts) to logcat, but use only the
+            // errno and transport in the fail message so similar failures have consistent messages
+            final String error = "DatagramCheck on transport " + Arrays.toString(transports)
+                    + " failed: " + result.errNo;
+            Log.e(TAG, error + ", result: " + result);
+            fail(error);
         }
     }
 
diff --git a/tests/cts/net/src/android/net/cts/NetworkStatsManagerTest.java b/tests/cts/net/src/android/net/cts/NetworkStatsManagerTest.java
index fef085d..e3d7240 100644
--- a/tests/cts/net/src/android/net/cts/NetworkStatsManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/NetworkStatsManagerTest.java
@@ -63,6 +63,7 @@
 import android.os.Process;
 import android.os.RemoteException;
 import android.os.SystemClock;
+import android.os.UserHandle;
 import android.platform.test.annotations.AppModeFull;
 import android.telephony.TelephonyManager;
 import android.text.TextUtils;
@@ -113,8 +114,8 @@
 
 
     private static final String LOG_TAG = "NetworkStatsManagerTest";
-    private static final String APPOPS_SET_SHELL_COMMAND = "appops set {0} {1} {2}";
-    private static final String APPOPS_GET_SHELL_COMMAND = "appops get {0} {1}";
+    private static final String APPOPS_SET_SHELL_COMMAND = "appops set --user {0} {1} {2} {3}";
+    private static final String APPOPS_GET_SHELL_COMMAND = "appops get --user {0} {1} {2}";
 
     private static final long MINUTE = 1000 * 60;
     private static final int TIMEOUT_MILLIS = 15000;
@@ -329,12 +330,14 @@
     }
 
     private void setAppOpsMode(String appop, String mode) throws Exception {
-        final String command = MessageFormat.format(APPOPS_SET_SHELL_COMMAND, mPkg, appop, mode);
+        final String command = MessageFormat.format(APPOPS_SET_SHELL_COMMAND,
+                UserHandle.myUserId(), mPkg, appop, mode);
         SystemUtil.runShellCommand(mInstrumentation, command);
     }
 
     private String getAppOpsMode(String appop) throws Exception {
-        final String command = MessageFormat.format(APPOPS_GET_SHELL_COMMAND, mPkg, appop);
+        final String command = MessageFormat.format(APPOPS_GET_SHELL_COMMAND,
+                UserHandle.myUserId(), mPkg, appop);
         String result = SystemUtil.runShellCommand(mInstrumentation, command);
         if (result == null) {
             Log.w(LOG_TAG, "App op " + appop + " could not be read.");
diff --git a/tests/cts/net/src/android/net/cts/NetworkValidationTestUtil.kt b/tests/cts/net/src/android/net/cts/NetworkValidationTestUtil.kt
index a0b40aa..d3d4f4d 100644
--- a/tests/cts/net/src/android/net/cts/NetworkValidationTestUtil.kt
+++ b/tests/cts/net/src/android/net/cts/NetworkValidationTestUtil.kt
@@ -17,6 +17,7 @@
 package android.net.cts
 
 import android.Manifest.permission.WRITE_DEVICE_CONFIG
+import android.Manifest.permission.WRITE_ALLOWLISTED_DEVICE_CONFIG
 import android.provider.DeviceConfig
 import android.provider.DeviceConfig.NAMESPACE_CONNECTIVITY
 import com.android.net.module.util.NetworkStackConstants
@@ -33,7 +34,7 @@
      * Clear the test network validation URLs.
      */
     @JvmStatic fun clearValidationTestUrlsDeviceConfig() {
-        runAsShell(WRITE_DEVICE_CONFIG) {
+        runAsShell(WRITE_DEVICE_CONFIG, WRITE_ALLOWLISTED_DEVICE_CONFIG) {
             DeviceConfig.setProperty(NAMESPACE_CONNECTIVITY,
                     NetworkStackConstants.TEST_CAPTIVE_PORTAL_HTTPS_URL, null, false)
             DeviceConfig.setProperty(NAMESPACE_CONNECTIVITY,
diff --git a/tests/cts/net/util/java/android/net/cts/util/CtsNetUtils.java b/tests/cts/net/util/java/android/net/cts/util/CtsNetUtils.java
index 0dd2a23..173d13f 100644
--- a/tests/cts/net/util/java/android/net/cts/util/CtsNetUtils.java
+++ b/tests/cts/net/util/java/android/net/cts/util/CtsNetUtils.java
@@ -53,6 +53,7 @@
 import android.os.Build;
 import android.os.ConditionVariable;
 import android.os.IBinder;
+import android.os.UserHandle;
 import android.system.Os;
 import android.system.OsConstants;
 import android.telephony.SubscriptionManager;
@@ -145,7 +146,8 @@
         for (final String pkg : new String[] {"com.android.shell", mContext.getPackageName()}) {
             final String cmd =
                     String.format(
-                            "appops set %s %s %s",
+                            "appops set --user %d %s %s %s",
+                            UserHandle.myUserId(), // user id
                             pkg, // Package name
                             opName, // Appop
                             (allow ? "allow" : "deny")); // Action
diff --git a/tests/cts/net/util/java/android/net/cts/util/CtsTetheringUtils.java b/tests/cts/net/util/java/android/net/cts/util/CtsTetheringUtils.java
index dffd9d5..243cd27 100644
--- a/tests/cts/net/util/java/android/net/cts/util/CtsTetheringUtils.java
+++ b/tests/cts/net/util/java/android/net/cts/util/CtsTetheringUtils.java
@@ -46,6 +46,7 @@
 import android.net.TetheringManager.TetheringEventCallback;
 import android.net.TetheringManager.TetheringInterfaceRegexps;
 import android.net.TetheringManager.TetheringRequest;
+import android.net.wifi.SoftApConfiguration;
 import android.net.wifi.WifiClient;
 import android.net.wifi.WifiManager;
 import android.net.wifi.WifiManager.SoftApCallback;
@@ -491,13 +492,29 @@
         }
     }
 
+    /**
+     * Starts Wi-Fi tethering.
+     */
     public TetheringInterface startWifiTethering(final TestTetheringEventCallback callback)
             throws InterruptedException {
+        return startWifiTethering(callback, null);
+    }
+
+    /**
+     * Starts Wi-Fi tethering with the specified SoftApConfiguration.
+     */
+    public TetheringInterface startWifiTethering(final TestTetheringEventCallback callback,
+            final SoftApConfiguration softApConfiguration)
+            throws InterruptedException {
         final List<String> wifiRegexs = getWifiTetherableInterfaceRegexps(callback);
 
         final StartTetheringCallback startTetheringCallback = new StartTetheringCallback();
-        final TetheringRequest request = new TetheringRequest.Builder(TETHERING_WIFI)
-                .setShouldShowEntitlementUi(false).build();
+        TetheringRequest.Builder builder = new TetheringRequest.Builder(TETHERING_WIFI)
+                .setShouldShowEntitlementUi(false);
+        if (softApConfiguration != null) {
+            builder.setSoftApConfiguration(softApConfiguration);
+        }
+        final TetheringRequest request = builder.build();
 
         return runAsShell(TETHER_PRIVILEGED, () -> {
             mTm.startTethering(request, c -> c.run() /* executor */, startTetheringCallback);
diff --git a/tests/cts/netpermission/updatestatspermission/Android.bp b/tests/cts/netpermission/updatestatspermission/Android.bp
index 689ce74..b324dc8 100644
--- a/tests/cts/netpermission/updatestatspermission/Android.bp
+++ b/tests/cts/netpermission/updatestatspermission/Android.bp
@@ -36,5 +36,6 @@
         "cts",
         "general-tests",
     ],
+    data: [":ConnectivityTestPreparer"],
     host_required: ["net-tests-utils-host-common"],
 }
diff --git a/tests/cts/tethering/Android.bp b/tests/cts/tethering/Android.bp
index 83818be..d9bc7f7 100644
--- a/tests/cts/tethering/Android.bp
+++ b/tests/cts/tethering/Android.bp
@@ -19,7 +19,10 @@
 
 java_defaults {
     name: "CtsTetheringTestDefaults",
-    defaults: ["cts_defaults"],
+    defaults: [
+        "cts_defaults",
+        "framework-connectivity-test-defaults",
+    ],
 
     libs: [
         "android.test.base.stubs.system",
diff --git a/tests/cts/tethering/src/android/tethering/cts/TetheringManagerTest.java b/tests/cts/tethering/src/android/tethering/cts/TetheringManagerTest.java
index 1454d9a..b294d63 100644
--- a/tests/cts/tethering/src/android/tethering/cts/TetheringManagerTest.java
+++ b/tests/cts/tethering/src/android/tethering/cts/TetheringManagerTest.java
@@ -22,6 +22,8 @@
 import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
 import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
 import static android.net.NetworkCapabilities.TRANSPORT_ETHERNET;
+import static android.net.TetheringManager.CONNECTIVITY_SCOPE_GLOBAL;
+import static android.net.TetheringManager.CONNECTIVITY_SCOPE_LOCAL;
 import static android.net.TetheringManager.TETHERING_BLUETOOTH;
 import static android.net.TetheringManager.TETHERING_ETHERNET;
 import static android.net.TetheringManager.TETHERING_NCM;
@@ -32,6 +34,7 @@
 import static android.net.TetheringManager.TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION;
 import static android.net.TetheringManager.TETHER_ERROR_NO_ERROR;
 import static android.net.cts.util.CtsTetheringUtils.isAnyIfaceMatch;
+import static android.os.Process.INVALID_UID;
 
 import static com.android.testutils.TestPermissionUtil.runAsShell;
 
@@ -74,6 +77,7 @@
 import android.telephony.SubscriptionManager;
 import android.telephony.TelephonyManager;
 
+import androidx.annotation.NonNull;
 import androidx.test.InstrumentationRegistry;
 import androidx.test.runner.AndroidJUnit4;
 
@@ -222,19 +226,23 @@
 
     }
 
-    @Test
-    public void testTetheringRequest() {
-        SoftApConfiguration softApConfiguration;
+    private SoftApConfiguration createSoftApConfiguration(@NonNull String ssid) {
+        SoftApConfiguration config;
         if (SdkLevel.isAtLeastT()) {
-            softApConfiguration = new SoftApConfiguration.Builder()
-                    .setWifiSsid(WifiSsid.fromBytes(
-                            "This is an SSID!".getBytes(StandardCharsets.UTF_8)))
+            config = new SoftApConfiguration.Builder()
+                    .setWifiSsid(WifiSsid.fromBytes(ssid.getBytes(StandardCharsets.UTF_8)))
                     .build();
         } else {
-            softApConfiguration = new SoftApConfiguration.Builder()
-                    .setSsid("This is an SSID!")
+            config = new SoftApConfiguration.Builder()
+                    .setSsid(ssid)
                     .build();
         }
+        return config;
+    }
+
+    @Test
+    public void testTetheringRequest() {
+        SoftApConfiguration softApConfiguration = createSoftApConfiguration("SSID");
         final TetheringRequest tr = new TetheringRequest.Builder(TETHERING_WIFI)
                 .setSoftApConfiguration(softApConfiguration)
                 .build();
@@ -243,41 +251,63 @@
         assertNull(tr.getClientStaticIpv4Address());
         assertFalse(tr.isExemptFromEntitlementCheck());
         assertTrue(tr.getShouldShowEntitlementUi());
+        assertEquals(CONNECTIVITY_SCOPE_GLOBAL, tr.getConnectivityScope());
         assertEquals(softApConfiguration, tr.getSoftApConfiguration());
+        assertEquals(INVALID_UID, tr.getUid());
+        assertNull(tr.getPackageName());
+        assertEquals(tr.toString(), "TetheringRequest[ "
+                + "TETHERING_WIFI, "
+                + "showProvisioningUi, "
+                + "CONNECTIVITY_SCOPE_GLOBAL, "
+                + "softApConfig=" + softApConfiguration.toString()
+                + " ]");
 
         final LinkAddress localAddr = new LinkAddress("192.168.24.5/24");
         final LinkAddress clientAddr = new LinkAddress("192.168.24.100/24");
         final TetheringRequest tr2 = new TetheringRequest.Builder(TETHERING_USB)
                 .setStaticIpv4Addresses(localAddr, clientAddr)
                 .setExemptFromEntitlementCheck(true)
-                .setShouldShowEntitlementUi(false).build();
+                .setShouldShowEntitlementUi(false)
+                .setConnectivityScope(CONNECTIVITY_SCOPE_LOCAL)
+                .build();
+        int uid = 1000;
+        String packageName = "package";
+        tr2.setUid(uid);
+        tr2.setPackageName(packageName);
 
         assertEquals(localAddr, tr2.getLocalIpv4Address());
         assertEquals(clientAddr, tr2.getClientStaticIpv4Address());
         assertEquals(TETHERING_USB, tr2.getTetheringType());
         assertTrue(tr2.isExemptFromEntitlementCheck());
         assertFalse(tr2.getShouldShowEntitlementUi());
+        assertEquals(CONNECTIVITY_SCOPE_LOCAL, tr2.getConnectivityScope());
+        assertNull(tr2.getSoftApConfiguration());
+        assertEquals(uid, tr2.getUid());
+        assertEquals(packageName, tr2.getPackageName());
+        assertEquals(tr2.toString(), "TetheringRequest[ "
+                + "TETHERING_USB, "
+                + "localIpv4Address=" + localAddr + ", "
+                + "staticClientAddress=" + clientAddr + ", "
+                + "exemptFromEntitlementCheck, "
+                + "CONNECTIVITY_SCOPE_LOCAL, "
+                + "uid=1000, "
+                + "packageName=package"
+                + " ]");
 
         final TetheringRequest tr3 = new TetheringRequest.Builder(TETHERING_USB)
                 .setStaticIpv4Addresses(localAddr, clientAddr)
                 .setExemptFromEntitlementCheck(true)
-                .setShouldShowEntitlementUi(false).build();
+                .setShouldShowEntitlementUi(false)
+                .setConnectivityScope(CONNECTIVITY_SCOPE_LOCAL)
+                .build();
+        tr3.setUid(uid);
+        tr3.setPackageName(packageName);
         assertEquals(tr2, tr3);
     }
 
     @Test
     public void testTetheringRequestSetSoftApConfigurationFailsWhenNotWifi() {
-        final SoftApConfiguration softApConfiguration;
-        if (SdkLevel.isAtLeastT()) {
-            softApConfiguration = new SoftApConfiguration.Builder()
-                    .setWifiSsid(WifiSsid.fromBytes(
-                            "This is an SSID!".getBytes(StandardCharsets.UTF_8)))
-                    .build();
-        } else {
-            softApConfiguration = new SoftApConfiguration.Builder()
-                    .setSsid("This is an SSID!")
-                    .build();
-        }
+        final SoftApConfiguration softApConfiguration = createSoftApConfiguration("SSID");
         for (int type : List.of(TETHERING_USB, TETHERING_BLUETOOTH, TETHERING_WIFI_P2P,
                 TETHERING_NCM, TETHERING_ETHERNET)) {
             try {
@@ -291,17 +321,7 @@
 
     @Test
     public void testTetheringRequestParcelable() {
-        final SoftApConfiguration softApConfiguration;
-        if (SdkLevel.isAtLeastT()) {
-            softApConfiguration = new SoftApConfiguration.Builder()
-                    .setWifiSsid(WifiSsid.fromBytes(
-                            "This is an SSID!".getBytes(StandardCharsets.UTF_8)))
-                    .build();
-        } else {
-            softApConfiguration = new SoftApConfiguration.Builder()
-                    .setSsid("This is an SSID!")
-                    .build();
-        }
+        final SoftApConfiguration softApConfiguration = createSoftApConfiguration("SSID");
         final LinkAddress localAddr = new LinkAddress("192.168.24.5/24");
         final LinkAddress clientAddr = new LinkAddress("192.168.24.100/24");
         final TetheringRequest withConfig = new TetheringRequest.Builder(TETHERING_WIFI)
@@ -328,10 +348,12 @@
             tetherEventCallback.assumeWifiTetheringSupported(mContext);
             tetherEventCallback.expectNoTetheringActive();
 
+            SoftApConfiguration softApConfig = createSoftApConfiguration("SSID");
             final TetheringInterface tetheredIface =
-                    mCtsTetheringUtils.startWifiTethering(tetherEventCallback);
+                    mCtsTetheringUtils.startWifiTethering(tetherEventCallback, softApConfig);
 
             assertNotNull(tetheredIface);
+            assertEquals(softApConfig, tetheredIface.getSoftApConfiguration());
             final String wifiTetheringIface = tetheredIface.getInterface();
 
             mCtsTetheringUtils.stopWifiTethering(tetherEventCallback);
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSDestroyedNetworkTests.kt b/tests/unit/java/com/android/server/connectivityservice/CSDestroyedNetworkTests.kt
index 5c29e3a..b824531 100644
--- a/tests/unit/java/com/android/server/connectivityservice/CSDestroyedNetworkTests.kt
+++ b/tests/unit/java/com/android/server/connectivityservice/CSDestroyedNetworkTests.kt
@@ -27,9 +27,26 @@
 import com.android.testutils.TestableNetworkCallback
 import org.junit.Test
 import org.junit.runner.RunWith
+import org.mockito.ArgumentMatchers.anyInt
+import org.mockito.ArgumentMatchers.argThat
+import org.mockito.ArgumentMatchers.eq
+import org.mockito.Mockito.clearInvocations
+import org.mockito.Mockito.inOrder
+import org.mockito.Mockito.never
+import org.mockito.Mockito.verify
 
 private const val LONG_TIMEOUT_MS = 5_000
 
+private val CAPABILITIES = NetworkCapabilities.Builder()
+        .addTransportType(TRANSPORT_WIFI)
+        .build()
+
+private val REQUEST = NetworkRequest.Builder()
+        .clearCapabilities()
+        .addTransportType(TRANSPORT_WIFI)
+        .build()
+
+
 @DevSdkIgnoreRunner.MonitorThreadLeak
 @RunWith(DevSdkIgnoreRunner::class)
 @SmallTest
@@ -37,29 +54,53 @@
 class CSDestroyedNetworkTests : CSTest() {
     @Test
     fun testDestroyNetworkNotKeptWhenUnvalidated() {
-        val nc = NetworkCapabilities.Builder()
-                .addTransportType(TRANSPORT_WIFI)
-                .build()
-
-        val nr = NetworkRequest.Builder()
-                .clearCapabilities()
-                .addTransportType(TRANSPORT_WIFI)
-                .build()
         val cbRequest = TestableNetworkCallback()
         val cbCallback = TestableNetworkCallback()
-        cm.requestNetwork(nr, cbRequest)
-        cm.registerNetworkCallback(nr, cbCallback)
+        cm.requestNetwork(REQUEST, cbRequest)
+        cm.registerNetworkCallback(REQUEST, cbCallback)
 
-        val firstAgent = Agent(nc = nc)
+        val firstAgent = Agent(nc = CAPABILITIES)
         firstAgent.connect()
         cbCallback.expectAvailableCallbacks(firstAgent.network, validated = false)
 
         firstAgent.unregisterAfterReplacement(LONG_TIMEOUT_MS)
 
-        val secondAgent = Agent(nc = nc)
+        val secondAgent = Agent(nc = CAPABILITIES)
         secondAgent.connect()
         cbCallback.expectAvailableCallbacks(secondAgent.network, validated = false)
 
         cbCallback.expect<Lost>(timeoutMs = 500) { it.network == firstAgent.network }
     }
+
+    @Test
+    fun testDestroyNetworkWithDelayedTeardown() {
+        val cbRequest = TestableNetworkCallback()
+        val cbCallback = TestableNetworkCallback()
+        cm.requestNetwork(REQUEST, cbRequest)
+        cm.registerNetworkCallback(REQUEST, cbCallback)
+
+        val firstAgent = Agent(nc = CAPABILITIES)
+        firstAgent.connect()
+        firstAgent.setTeardownDelayMillis(1)
+        cbCallback.expectAvailableCallbacks(firstAgent.network, validated = false)
+
+        clearInvocations(netd)
+        val inOrder = inOrder(netd)
+        firstAgent.unregisterAfterReplacement(LONG_TIMEOUT_MS)
+
+        val secondAgent = Agent(nc = CAPABILITIES)
+        secondAgent.connect()
+        cbCallback.expectAvailableCallbacks(secondAgent.network, validated = false)
+        secondAgent.disconnect()
+
+        cbCallback.expect<Lost>(timeoutMs = 500) { it.network == firstAgent.network }
+        cbCallback.expect<Lost>(timeoutMs = 500) { it.network == secondAgent.network }
+        // onLost is fired before the network is destroyed.
+        waitForIdle()
+
+        inOrder.verify(netd).networkDestroy(eq(firstAgent.network.netId))
+        inOrder.verify(netd).networkCreate(argThat{ it.netId == secondAgent.network.netId })
+        inOrder.verify(netd).networkDestroy(eq(secondAgent.network.netId))
+        verify(netd, never()).networkSetPermissionForNetwork(anyInt(), anyInt())
+    }
 }
diff --git a/tests/unit/java/com/android/server/connectivityservice/base/CSAgentWrapper.kt b/tests/unit/java/com/android/server/connectivityservice/base/CSAgentWrapper.kt
index 1f5ee32..9be7d11 100644
--- a/tests/unit/java/com/android/server/connectivityservice/base/CSAgentWrapper.kt
+++ b/tests/unit/java/com/android/server/connectivityservice/base/CSAgentWrapper.kt
@@ -181,6 +181,7 @@
         cb.eventuallyExpect<Lost> { it.network == agent.network }
     }
 
+    fun setTeardownDelayMillis(delayMillis: Int) = agent.setTeardownDelayMillis(delayMillis)
     fun unregisterAfterReplacement(timeoutMs: Int) = agent.unregisterAfterReplacement(timeoutMs)
 
     fun sendLocalNetworkConfig(lnc: LocalNetworkConfig) = agent.sendLocalNetworkConfig(lnc)
diff --git a/tests/unit/jni/android_net_frameworktests_util/onload.cpp b/tests/unit/jni/android_net_frameworktests_util/onload.cpp
index 06a3986..a0ce4f8 100644
--- a/tests/unit/jni/android_net_frameworktests_util/onload.cpp
+++ b/tests/unit/jni/android_net_frameworktests_util/onload.cpp
@@ -24,6 +24,8 @@
 
 int register_com_android_net_module_util_BpfMap(JNIEnv* env, char const* class_name);
 int register_com_android_net_module_util_TcUtils(JNIEnv* env, char const* class_name);
+int register_com_android_net_module_util_TimerFdUtils(JNIEnv *env,
+                                                      char const *class_name);
 
 extern "C" jint JNI_OnLoad(JavaVM* vm, void*) {
     JNIEnv *env;
@@ -38,6 +40,10 @@
     if (register_com_android_net_module_util_TcUtils(env,
             "android/net/frameworktests/util/TcUtils") < 0) return JNI_ERR;
 
+    if (register_com_android_net_module_util_TimerFdUtils(
+            env, "android/net/frameworktests/util/TimerFdUtils") < 0)
+      return JNI_ERR;
+
     return JNI_VERSION_1_6;
 }
 
diff --git a/thread/TEST_MAPPING b/thread/TEST_MAPPING
index 34d67bb..40842f1 100644
--- a/thread/TEST_MAPPING
+++ b/thread/TEST_MAPPING
@@ -13,6 +13,9 @@
   "postsubmit": [
     {
       "name": "ThreadNetworkMultiDeviceTests"
+    },
+    {
+      "name": "ThreadNetworkTrelDisabledTests"
     }
   ]
 }
diff --git a/thread/framework/java/android/net/thread/ThreadNetworkController.java b/thread/framework/java/android/net/thread/ThreadNetworkController.java
index 14d22d1..73a6bda 100644
--- a/thread/framework/java/android/net/thread/ThreadNetworkController.java
+++ b/thread/framework/java/android/net/thread/ThreadNetworkController.java
@@ -908,7 +908,6 @@
 
         for (int i = 0; i < channelMaxPowers.size(); i++) {
             int channel = channelMaxPowers.keyAt(i);
-            int maxPower = channelMaxPowers.get(channel);
 
             if ((channel < ActiveOperationalDataset.CHANNEL_MIN_24_GHZ)
                     || (channel > ActiveOperationalDataset.CHANNEL_MAX_24_GHZ)) {
diff --git a/thread/service/java/com/android/server/thread/FeatureFlags.java b/thread/service/java/com/android/server/thread/FeatureFlags.java
new file mode 100644
index 0000000..29bcedd
--- /dev/null
+++ b/thread/service/java/com/android/server/thread/FeatureFlags.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2024 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 com.android.server.thread;
+
+import com.android.net.module.util.DeviceConfigUtils;
+
+public class FeatureFlags {
+    // The namespace for Thread Network feature flags
+    private static final String NAMESPACE_THREAD_NETWORK = "thread_network";
+
+    // The prefix for TREL feature flags
+    private static final String TREL_FEATURE_PREFIX = "TrelFeature__";
+
+    // The feature flag for TREL enabled state
+    private static final String TREL_ENABLED_FLAG = TREL_FEATURE_PREFIX + "enabled";
+
+    private static boolean isFeatureEnabled(String flag, boolean defaultValue) {
+        return DeviceConfigUtils.getDeviceConfigPropertyBoolean(
+                NAMESPACE_THREAD_NETWORK, flag, defaultValue);
+    }
+
+    public static boolean isTrelEnabled() {
+        return isFeatureEnabled(TREL_ENABLED_FLAG, false);
+    }
+}
diff --git a/thread/service/java/com/android/server/thread/ThreadNetworkControllerService.java b/thread/service/java/com/android/server/thread/ThreadNetworkControllerService.java
index e3c2a28..30d5a02 100644
--- a/thread/service/java/com/android/server/thread/ThreadNetworkControllerService.java
+++ b/thread/service/java/com/android/server/thread/ThreadNetworkControllerService.java
@@ -357,7 +357,8 @@
                 mNsdPublisher,
                 getMeshcopTxtAttributes(mResources.get()),
                 mOtDaemonCallbackProxy,
-                mCountryCodeSupplier.get());
+                mCountryCodeSupplier.get(),
+                FeatureFlags.isTrelEnabled());
         otDaemon.asBinder().linkToDeath(() -> mHandler.post(this::onOtDaemonDied), 0);
         mOtDaemon = otDaemon;
         mHandler.post(mNat64CidrController::maybeUpdateNat64Cidr);
@@ -1405,9 +1406,10 @@
     }
 
     private void setInfraLinkState(InfraLinkState newInfraLinkState) {
-        if (!Objects.equals(mInfraLinkState, newInfraLinkState)) {
-            LOG.i("Infra link state changed: " + mInfraLinkState + " -> " + newInfraLinkState);
+        if (Objects.equals(mInfraLinkState, newInfraLinkState)) {
+            return;
         }
+        LOG.i("Infra link state changed: " + mInfraLinkState + " -> " + newInfraLinkState);
         setInfraLinkInterfaceName(newInfraLinkState.interfaceName);
         setInfraLinkNat64Prefix(newInfraLinkState.nat64Prefix);
         setInfraLinkDnsServers(newInfraLinkState.dnsServers);
@@ -1415,6 +1417,9 @@
     }
 
     private void setInfraLinkInterfaceName(String newInfraLinkInterfaceName) {
+        if (Objects.equals(mInfraLinkState.interfaceName, newInfraLinkInterfaceName)) {
+            return;
+        }
         ParcelFileDescriptor infraIcmp6Socket = null;
         if (newInfraLinkInterfaceName != null) {
             try {
@@ -1435,6 +1440,9 @@
     }
 
     private void setInfraLinkNat64Prefix(@Nullable String newNat64Prefix) {
+        if (Objects.equals(newNat64Prefix, mInfraLinkState.nat64Prefix)) {
+            return;
+        }
         try {
             getOtDaemon()
                     .setInfraLinkNat64Prefix(
@@ -1445,6 +1453,9 @@
     }
 
     private void setInfraLinkDnsServers(List<String> newDnsServers) {
+        if (Objects.equals(newDnsServers, mInfraLinkState.dnsServers)) {
+            return;
+        }
         try {
             getOtDaemon()
                     .setInfraLinkDnsServers(
@@ -1783,6 +1794,7 @@
                     // do nothing if the client is dead
                 }
             }
+            mInfraLinkState = newInfraLinkStateBuilder().build();
         }
 
         private void onThreadEnabledChanged(int state, long listenerId) {
diff --git a/thread/tests/integration/Android.bp b/thread/tests/integration/Android.bp
index 8f082a4..798a51e 100644
--- a/thread/tests/integration/Android.bp
+++ b/thread/tests/integration/Android.bp
@@ -62,3 +62,23 @@
     ],
     compile_multilib: "both",
 }
+
+android_test {
+    name: "ThreadNetworkTrelDisabledTests",
+    platform_apis: true,
+    manifest: "AndroidManifest.xml",
+    test_config: "AndroidTestTrelDisabled.xml",
+    defaults: [
+        "framework-connectivity-test-defaults",
+        "ThreadNetworkIntegrationTestsDefaults",
+    ],
+    test_suites: [
+        "mts-tethering",
+        "general-tests",
+    ],
+    srcs: [
+        "src/**/*.java",
+        "src/**/*.kt",
+    ],
+    compile_multilib: "both",
+}
diff --git a/thread/tests/integration/AndroidTest.xml b/thread/tests/integration/AndroidTest.xml
index 8f98941..08409b4 100644
--- a/thread/tests/integration/AndroidTest.xml
+++ b/thread/tests/integration/AndroidTest.xml
@@ -48,4 +48,10 @@
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
         <option name="package" value="com.android.thread.tests.integration" />
     </test>
+
+    <!-- Enable TREL for integration tests -->
+    <target_preparer class="com.android.tradefed.targetprep.FeatureFlagTargetPreparer">
+        <option name="flag-value"
+                value="thread_network/TrelFeature__enabled=true"/>
+    </target_preparer>
 </configuration>
diff --git a/thread/tests/integration/AndroidTestTrelDisabled.xml b/thread/tests/integration/AndroidTestTrelDisabled.xml
new file mode 100644
index 0000000..600652a
--- /dev/null
+++ b/thread/tests/integration/AndroidTestTrelDisabled.xml
@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2024 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 description="Config for Thread integration tests with TREL disabled">
+    <option name="test-tag" value="ThreadNetworkTrelDisabledTests" />
+    <option name="test-suite-tag" value="apct" />
+
+    <!--
+        Only run tests if the device under test is SDK version 34 (Android 14) or above.
+    -->
+    <object type="module_controller"
+            class="com.android.tradefed.testtype.suite.module.Sdk34ModuleController" />
+
+    <!-- Run tests in MTS only if the Tethering Mainline module is installed. -->
+    <object type="module_controller"
+            class="com.android.tradefed.testtype.suite.module.MainlineTestModuleController">
+        <option name="mainline-module-package-name" value="com.google.android.tethering" />
+    </object>
+
+    <object type="module_controller"
+            class="com.android.tradefed.testtype.suite.module.DeviceFeatureModuleController">
+        <option name="required-feature" value="android.hardware.thread_network" />
+    </object>
+
+    <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer" />
+
+    <!-- Install test -->
+    <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
+        <option name="test-file-name" value="ThreadNetworkTrelDisabledTests.apk" />
+        <option name="check-min-sdk" value="true" />
+        <option name="cleanup-apks" value="true" />
+    </target_preparer>
+
+    <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
+        <option name="package" value="com.android.thread.tests.integration" />
+    </test>
+
+    <!-- Disable TREL for integration tests -->
+    <target_preparer class="com.android.tradefed.targetprep.FeatureFlagTargetPreparer">
+        <option name="flag-value"
+                value="thread_network/TrelFeature__enabled=false"/>
+    </target_preparer>
+</configuration>
diff --git a/thread/tests/integration/src/android/net/thread/BorderRoutingTest.java b/thread/tests/integration/src/android/net/thread/BorderRoutingTest.java
index ddbef47..aeeed65 100644
--- a/thread/tests/integration/src/android/net/thread/BorderRoutingTest.java
+++ b/thread/tests/integration/src/android/net/thread/BorderRoutingTest.java
@@ -58,6 +58,7 @@
 import android.net.thread.utils.InfraNetworkDevice;
 import android.net.thread.utils.IntegrationTestUtils;
 import android.net.thread.utils.OtDaemonController;
+import android.net.thread.utils.TestTunNetworkUtils;
 import android.net.thread.utils.ThreadFeatureCheckerRule;
 import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresIpv6MulticastRouting;
 import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresSimulationThreadDevice;
@@ -160,6 +161,7 @@
     @After
     public void tearDown() throws Exception {
         mController.setTestNetworkAsUpstreamAndWait(null);
+        TestTunNetworkUtils.tearDownAllInfraNetworks();
 
         mHandlerThread.quitSafely();
         mHandlerThread.join();
@@ -226,19 +228,13 @@
         FullThreadDevice ftd = mFtds.get(0);
         joinNetworkAndWaitForOmr(ftd, DEFAULT_DATASET);
         Inet6Address ftdOmr = ftd.getOmrAddress();
-        // Create a new infra network and let Thread prefer it
-        TestNetworkTracker oldInfraNetworkTracker = mInfraNetworkTracker;
-        try {
-            setUpInfraNetwork();
-            mInfraNetworkReader = newPacketReader(mInfraNetworkTracker.getTestIface(), mHandler);
-            startInfraDeviceAndWaitForOnLinkAddr();
+        setUpInfraNetwork();
+        mInfraNetworkReader = newPacketReader(mInfraNetworkTracker.getTestIface(), mHandler);
+        startInfraDeviceAndWaitForOnLinkAddr();
 
-            mInfraDevice.sendEchoRequest(ftd.getOmrAddress());
+        mInfraDevice.sendEchoRequest(ftd.getOmrAddress());
 
-            assertNotNull(pollForIcmpPacketOnInfraNetwork(ICMPV6_ECHO_REPLY_TYPE, ftdOmr));
-        } finally {
-            runAsShell(MANAGE_TEST_NETWORKS, () -> oldInfraNetworkTracker.teardown());
-        }
+        assertNotNull(pollForIcmpPacketOnInfraNetwork(ICMPV6_ECHO_REPLY_TYPE, ftdOmr));
     }
 
     @Test
@@ -615,8 +611,6 @@
         subscribeMulticastAddressAndWait(ftd, GROUP_ADDR_SCOPE_5);
         Inet6Address ftdOmr = ftd.getOmrAddress();
 
-        // Destroy infra link and re-create
-        tearDownInfraNetwork();
         setUpInfraNetwork();
         mInfraNetworkReader = newPacketReader(mInfraNetworkTracker.getTestIface(), mHandler);
         startInfraDeviceAndWaitForOnLinkAddr();
@@ -642,8 +636,6 @@
         joinNetworkAndWaitForOmr(ftd, DEFAULT_DATASET);
         Inet6Address ftdOmr = ftd.getOmrAddress();
 
-        // Destroy infra link and re-create
-        tearDownInfraNetwork();
         setUpInfraNetwork();
         mInfraNetworkReader = newPacketReader(mInfraNetworkTracker.getTestIface(), mHandler);
         startInfraDeviceAndWaitForOnLinkAddr();
@@ -683,7 +675,7 @@
     @Test
     public void nat64_withAilNat64Prefix_threadDevicePingIpv4InfraDevice_outboundPacketIsForwarded()
             throws Exception {
-        tearDownInfraNetwork();
+        TestTunNetworkUtils.tearDownInfraNetwork(mInfraNetworkTracker);
         LinkProperties lp = new LinkProperties();
         // NAT64 feature requires the infra network to have an IPv4 default route.
         lp.addRoute(
@@ -701,7 +693,7 @@
                         RouteInfo.RTN_UNICAST,
                         1500 /* mtu */));
         lp.setNat64Prefix(AIL_NAT64_PREFIX);
-        mInfraNetworkTracker = IntegrationTestUtils.setUpInfraNetwork(mContext, mController, lp);
+        mInfraNetworkTracker = TestTunNetworkUtils.setUpInfraNetwork(mContext, mController, lp);
         mInfraNetworkReader = newPacketReader(mInfraNetworkTracker.getTestIface(), mHandler);
         FullThreadDevice ftd = mFtds.get(0);
         joinNetworkAndWaitForOmr(ftd, DEFAULT_DATASET);
@@ -717,16 +709,12 @@
     }
 
     private void setUpInfraNetwork() throws Exception {
-        mInfraNetworkTracker = IntegrationTestUtils.setUpInfraNetwork(mContext, mController);
-    }
-
-    private void tearDownInfraNetwork() {
-        IntegrationTestUtils.tearDownInfraNetwork(mInfraNetworkTracker);
+        mInfraNetworkTracker = TestTunNetworkUtils.setUpInfraNetwork(mContext, mController);
     }
 
     private void startInfraDeviceAndWaitForOnLinkAddr() {
         mInfraDevice =
-                IntegrationTestUtils.startInfraDeviceAndWaitForOnLinkAddr(mInfraNetworkReader);
+                TestTunNetworkUtils.startInfraDeviceAndWaitForOnLinkAddr(mInfraNetworkReader);
     }
 
     private void assertInfraLinkMemberOfGroup(Inet6Address address) throws Exception {
diff --git a/thread/tests/integration/src/android/net/thread/InternetAccessTest.kt b/thread/tests/integration/src/android/net/thread/InternetAccessTest.kt
index 162f58e..3c9aa07 100644
--- a/thread/tests/integration/src/android/net/thread/InternetAccessTest.kt
+++ b/thread/tests/integration/src/android/net/thread/InternetAccessTest.kt
@@ -28,12 +28,10 @@
 import android.net.thread.utils.IntegrationTestUtils.joinNetworkAndWaitForOmr
 import android.net.thread.utils.IntegrationTestUtils.leaveNetworkAndDisableThread
 import android.net.thread.utils.IntegrationTestUtils.newPacketReader
-import android.net.thread.utils.IntegrationTestUtils.setUpInfraNetwork
-import android.net.thread.utils.IntegrationTestUtils.startInfraDeviceAndWaitForOnLinkAddr
-import android.net.thread.utils.IntegrationTestUtils.tearDownInfraNetwork
 import android.net.thread.utils.IntegrationTestUtils.waitFor
 import android.net.thread.utils.OtDaemonController
 import android.net.thread.utils.TestDnsServer
+import android.net.thread.utils.TestTunNetworkUtils
 import android.net.thread.utils.TestUdpEchoServer
 import android.net.thread.utils.ThreadFeatureCheckerRule
 import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresSimulationThreadDevice
@@ -128,11 +126,11 @@
         handler = Handler(handlerThread.looper)
         ftds = ArrayList()
 
-        infraNetworkTracker = setUpInfraNetwork(context, controller)
+        infraNetworkTracker = TestTunNetworkUtils.setUpInfraNetwork(context, controller)
 
         // Create an infra network device.
         infraNetworkReader = newPacketReader(infraNetworkTracker.testIface, handler)
-        infraDevice = startInfraDeviceAndWaitForOnLinkAddr(infraNetworkReader)
+        infraDevice = TestTunNetworkUtils.startInfraDeviceAndWaitForOnLinkAddr(infraNetworkReader)
 
         // Create a DNS server
         dnsServer = TestDnsServer(infraNetworkReader, DNS_SERVER_ADDR, ANSWER_RECORDS)
@@ -150,7 +148,7 @@
     @Throws(Exception::class)
     fun tearDown() {
         controller.setTestNetworkAsUpstreamAndWait(null)
-        tearDownInfraNetwork(infraNetworkTracker)
+        TestTunNetworkUtils.tearDownAllInfraNetworks()
 
         dnsServer.stop()
         udpEchoServer.stop()
@@ -202,6 +200,24 @@
         assertThat(reply).isEqualTo("Hello,Thread")
     }
 
+    @Test
+    fun nat64Enabled_afterInfraNetworkSwitch_threadDeviceSendsUdpToEchoServer_replyIsReceived() {
+        controller.setNat64EnabledAndWait(true)
+        waitFor({ otCtl.hasNat64PrefixInNetdata() }, Duration.ofSeconds(10))
+        infraNetworkTracker = TestTunNetworkUtils.setUpInfraNetwork(context, controller)
+        infraNetworkReader = newPacketReader(infraNetworkTracker.testIface, handler)
+        udpEchoServer = TestUdpEchoServer(infraNetworkReader, UDP_ECHO_SERVER_ADDRESS)
+        val ftd = ftds[0]
+        joinNetworkAndWaitForOmr(ftd, DEFAULT_DATASET)
+        waitFor({ otCtl.hasNat64PrefixInNetdata() }, Duration.ofSeconds(10))
+        udpEchoServer.start()
+
+        ftd.udpOpen()
+        ftd.udpSend("Hello,Thread", UDP_ECHO_SERVER_ADDRESS.address, UDP_ECHO_SERVER_ADDRESS.port)
+        val reply = ftd.udpReceive()
+        assertThat(reply).isEqualTo("Hello,Thread")
+    }
+
     private fun extractIpv4AddressFromMappedAddress(address: InetAddress): Inet4Address {
         return InetAddress.getByAddress(address.address.slice(12 until 16).toByteArray())
             as Inet4Address
diff --git a/thread/tests/integration/src/android/net/thread/ServiceDiscoveryTest.java b/thread/tests/integration/src/android/net/thread/ServiceDiscoveryTest.java
index 2afca5f..6c2a9bb 100644
--- a/thread/tests/integration/src/android/net/thread/ServiceDiscoveryTest.java
+++ b/thread/tests/integration/src/android/net/thread/ServiceDiscoveryTest.java
@@ -30,6 +30,8 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import static org.junit.Assert.assertThrows;
+import static org.junit.Assume.assumeFalse;
+import static org.junit.Assume.assumeTrue;
 
 import static java.nio.charset.StandardCharsets.UTF_8;
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
@@ -50,6 +52,9 @@
 import androidx.test.filters.LargeTest;
 import androidx.test.runner.AndroidJUnit4;
 
+import com.android.net.module.util.DeviceConfigUtils;
+import com.android.net.module.util.HexDump;
+
 import com.google.common.truth.Correspondence;
 
 import org.junit.After;
@@ -64,6 +69,7 @@
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Random;
 import java.util.concurrent.CompletableFuture;
@@ -441,6 +447,40 @@
                 .containsExactly("key1", bytes(0x01, 0x02), "key2", bytes(3));
     }
 
+    @Test
+    // TODO: move this case out of ServiceDiscoveryTest when the service discovery utilities
+    // are decoupled from this test.
+    public void trelFeatureFlagEnabled_trelServicePublished() throws Exception {
+        assumeTrue(
+                DeviceConfigUtils.getDeviceConfigPropertyBoolean(
+                        "thread_network", "TrelFeature__enabled", false));
+
+        NsdServiceInfo discoveredService = discoverService(mNsdManager, "_trel._udp");
+        assertThat(discoveredService).isNotNull();
+        // Resolve service with the current TREL port, otherwise it may return stale service from
+        // a previous infra link setup.
+        NsdServiceInfo trelService =
+                resolveServiceUntil(
+                        mNsdManager, discoveredService, s -> s.getPort() == mOtCtl.getTrelPort());
+
+        Map<String, byte[]> txtMap = trelService.getAttributes();
+        assertThat(HexDump.toHexString(txtMap.get("xa")).toLowerCase(Locale.ROOT))
+                .isEqualTo(mOtCtl.getExtendedAddr().toLowerCase(Locale.ROOT));
+        assertThat(HexDump.toHexString(txtMap.get("xp")).toLowerCase(Locale.ROOT))
+                .isEqualTo(mOtCtl.getExtendedPanId().toLowerCase(Locale.ROOT));
+    }
+
+    @Test
+    // TODO: move this case out of ServiceDiscoveryTest when the service discovery utilities
+    // are decoupled from this test.
+    public void trelFeatureFlagDisabled_trelServiceNotPublished() throws Exception {
+        assumeFalse(
+                DeviceConfigUtils.getDeviceConfigPropertyBoolean(
+                        "thread_network", "TrelFeature__enabled", false));
+
+        assertThrows(TimeoutException.class, () -> discoverService(mNsdManager, "_trel._udp"));
+    }
+
     private void registerService(NsdServiceInfo serviceInfo, RegistrationListener listener)
             throws InterruptedException, ExecutionException, TimeoutException {
         mNsdManager.registerService(serviceInfo, PROTOCOL_DNS_SD, listener);
diff --git a/thread/tests/integration/src/android/net/thread/utils/IntegrationTestUtils.kt b/thread/tests/integration/src/android/net/thread/utils/IntegrationTestUtils.kt
index c3859c1..07d0390 100644
--- a/thread/tests/integration/src/android/net/thread/utils/IntegrationTestUtils.kt
+++ b/thread/tests/integration/src/android/net/thread/utils/IntegrationTestUtils.kt
@@ -649,57 +649,6 @@
         )
     }
 
-    private fun defaultLinkProperties(): LinkProperties {
-        val lp = LinkProperties()
-        // TODO: use a fake DNS server
-        lp.setDnsServers(listOf(parseNumericAddress("8.8.8.8")))
-        // NAT64 feature requires the infra network to have an IPv4 default route.
-        lp.addRoute(
-            RouteInfo(
-                IpPrefix("0.0.0.0/0") /* destination */,
-                null /* gateway */,
-                null /* iface */,
-                RouteInfo.RTN_UNICAST, 1500 /* mtu */
-            )
-        )
-        return lp
-    }
-
-    @JvmStatic
-    @JvmOverloads
-    fun startInfraDeviceAndWaitForOnLinkAddr(
-            pollPacketReader: PollPacketReader,
-            macAddress: MacAddress = MacAddress.fromString("1:2:3:4:5:6")
-    ): InfraNetworkDevice {
-        val infraDevice = InfraNetworkDevice(macAddress, pollPacketReader)
-        infraDevice.runSlaac(Duration.ofSeconds(60))
-        requireNotNull(infraDevice.ipv6Addr)
-        return infraDevice
-    }
-
-    @JvmStatic
-    @JvmOverloads
-    @Throws(java.lang.Exception::class)
-    fun setUpInfraNetwork(
-        context: Context,
-        controller: ThreadNetworkControllerWrapper,
-        lp: LinkProperties = defaultLinkProperties()
-    ): TestNetworkTracker {
-        val infraNetworkTracker: TestNetworkTracker =
-            runAsShell(
-                MANAGE_TEST_NETWORKS,
-                supplier = { initTestNetwork(context, lp, setupTimeoutMs = 5000) })
-        val infraNetworkName: String = infraNetworkTracker.testIface.getInterfaceName()
-        controller.setTestNetworkAsUpstreamAndWait(infraNetworkName)
-
-        return infraNetworkTracker
-    }
-
-    @JvmStatic
-    fun tearDownInfraNetwork(testNetworkTracker: TestNetworkTracker) {
-        runAsShell(MANAGE_TEST_NETWORKS) { testNetworkTracker.teardown() }
-    }
-
     /**
      * Stop the ot-daemon by shell command.
      */
diff --git a/thread/tests/integration/src/android/net/thread/utils/OtDaemonController.java b/thread/tests/integration/src/android/net/thread/utils/OtDaemonController.java
index afb0fc7..9fbfa45 100644
--- a/thread/tests/integration/src/android/net/thread/utils/OtDaemonController.java
+++ b/thread/tests/integration/src/android/net/thread/utils/OtDaemonController.java
@@ -144,6 +144,18 @@
         executeCommand("netdata register");
     }
 
+    public int getTrelPort() {
+        return Integer.parseInt(executeCommandAndParse("trel port").get(0));
+    }
+
+    public String getExtendedAddr() {
+        return executeCommandAndParse("extaddr").get(0);
+    }
+
+    public String getExtendedPanId() {
+        return executeCommandAndParse("extpanid").get(0);
+    }
+
     public String executeCommand(String cmd) {
         return SystemUtil.runShellCommand(OT_CTL + " " + cmd);
     }
diff --git a/thread/tests/integration/src/android/net/thread/utils/TestTunNetworkUtils.kt b/thread/tests/integration/src/android/net/thread/utils/TestTunNetworkUtils.kt
new file mode 100644
index 0000000..1667980
--- /dev/null
+++ b/thread/tests/integration/src/android/net/thread/utils/TestTunNetworkUtils.kt
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2024 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.thread.utils
+
+import android.Manifest.permission.MANAGE_TEST_NETWORKS
+import android.content.Context
+import android.net.InetAddresses.parseNumericAddress
+import android.net.IpPrefix
+import android.net.LinkProperties
+import android.net.MacAddress
+import android.net.RouteInfo
+import com.android.testutils.PollPacketReader
+import com.android.testutils.TestNetworkTracker
+import com.android.testutils.initTestNetwork
+import com.android.testutils.runAsShell
+import java.time.Duration
+
+object TestTunNetworkUtils {
+    private val networkTrackers = mutableListOf<TestNetworkTracker>()
+
+    @JvmStatic
+    @JvmOverloads
+    fun setUpInfraNetwork(
+        context: Context,
+        controller: ThreadNetworkControllerWrapper,
+        lp: LinkProperties = defaultLinkProperties(),
+    ): TestNetworkTracker {
+        val infraNetworkTracker: TestNetworkTracker =
+            runAsShell(
+                MANAGE_TEST_NETWORKS,
+                supplier = { initTestNetwork(context, lp, setupTimeoutMs = 5000) },
+            )
+        val infraNetworkName: String = infraNetworkTracker.testIface.getInterfaceName()
+        controller.setTestNetworkAsUpstreamAndWait(infraNetworkName)
+        networkTrackers.add(infraNetworkTracker)
+
+        return infraNetworkTracker
+    }
+
+    @JvmStatic
+    fun tearDownInfraNetwork(testNetworkTracker: TestNetworkTracker) {
+        runAsShell(MANAGE_TEST_NETWORKS) { testNetworkTracker.teardown() }
+    }
+
+    @JvmStatic
+    fun tearDownAllInfraNetworks() {
+        networkTrackers.forEach { tearDownInfraNetwork(it) }
+        networkTrackers.clear()
+    }
+
+    @JvmStatic
+    @JvmOverloads
+    fun startInfraDeviceAndWaitForOnLinkAddr(
+        pollPacketReader: PollPacketReader,
+        macAddress: MacAddress = MacAddress.fromString("1:2:3:4:5:6"),
+    ): InfraNetworkDevice {
+        val infraDevice = InfraNetworkDevice(macAddress, pollPacketReader)
+        infraDevice.runSlaac(Duration.ofSeconds(60))
+        requireNotNull(infraDevice.ipv6Addr)
+        return infraDevice
+    }
+
+    private fun defaultLinkProperties(): LinkProperties {
+        val lp = LinkProperties()
+        // TODO: use a fake DNS server
+        lp.setDnsServers(listOf(parseNumericAddress("8.8.8.8")))
+        // NAT64 feature requires the infra network to have an IPv4 default route.
+        lp.addRoute(
+            RouteInfo(
+                IpPrefix("0.0.0.0/0") /* destination */,
+                null /* gateway */,
+                null /* iface */,
+                RouteInfo.RTN_UNICAST,
+                1500, /* mtu */
+            )
+        )
+        return lp
+    }
+}
diff --git a/thread/tests/unit/Android.bp b/thread/tests/unit/Android.bp
index c6a24ea..53b1eca 100644
--- a/thread/tests/unit/Android.bp
+++ b/thread/tests/unit/Android.bp
@@ -35,6 +35,7 @@
     static_libs: [
         "androidx.test.rules",
         "frameworks-base-testutils",
+        "framework-configinfrastructure.stubs.module_lib",
         "framework-connectivity-pre-jarjar",
         "framework-connectivity-t-pre-jarjar",
         "framework-location.stubs.module_lib",
diff --git a/thread/tests/unit/src/com/android/server/thread/ThreadNetworkControllerServiceTest.java b/thread/tests/unit/src/com/android/server/thread/ThreadNetworkControllerServiceTest.java
index e188491..dcbb3f5 100644
--- a/thread/tests/unit/src/com/android/server/thread/ThreadNetworkControllerServiceTest.java
+++ b/thread/tests/unit/src/com/android/server/thread/ThreadNetworkControllerServiceTest.java
@@ -17,6 +17,8 @@
 package com.android.server.thread;
 
 import static android.Manifest.permission.NETWORK_SETTINGS;
+import static android.Manifest.permission.WRITE_ALLOWLISTED_DEVICE_CONFIG;
+import static android.Manifest.permission.WRITE_DEVICE_CONFIG;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN;
 import static android.net.NetworkCapabilities.TRANSPORT_ETHERNET;
@@ -34,6 +36,7 @@
 
 import static com.android.server.thread.ThreadNetworkCountryCode.DEFAULT_COUNTRY_CODE;
 import static com.android.server.thread.openthread.IOtDaemon.ErrorCode.OT_ERROR_INVALID_STATE;
+import static com.android.testutils.TestPermissionUtil.runAsShell;
 
 import static com.google.common.io.BaseEncoding.base16;
 import static com.google.common.truth.Truth.assertThat;
@@ -85,6 +88,7 @@
 import android.os.SystemClock;
 import android.os.UserManager;
 import android.os.test.TestLooper;
+import android.provider.DeviceConfig;
 import android.util.AtomicFile;
 
 import androidx.test.annotation.UiThreadTest;
@@ -102,6 +106,7 @@
 import com.android.server.thread.openthread.OtDaemonConfiguration;
 import com.android.server.thread.openthread.testing.FakeOtDaemon;
 
+import org.junit.After;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
@@ -258,6 +263,14 @@
         mService.setTestNetworkAgent(mMockNetworkAgent);
     }
 
+    @After
+    public void tearDown() throws Exception {
+        runAsShell(
+                WRITE_DEVICE_CONFIG,
+                WRITE_ALLOWLISTED_DEVICE_CONFIG,
+                () -> DeviceConfig.deleteProperty("thread_network", "TrelFeature__enabled"));
+    }
+
     @Test
     public void initialize_tunInterfaceAndNsdPublisherSetToOtDaemon() throws Exception {
         when(mMockTunIfController.getTunFd()).thenReturn(mMockTunFd);
@@ -324,6 +337,35 @@
     }
 
     @Test
+    public void initialize_trelFeatureDisabled_trelDisabledAtOtDaemon() throws Exception {
+        runAsShell(
+                WRITE_DEVICE_CONFIG,
+                WRITE_ALLOWLISTED_DEVICE_CONFIG,
+                () ->
+                        DeviceConfig.setProperty(
+                                "thread_network", "TrelFeature__enabled", "false", false));
+
+        mService.initialize();
+        mTestLooper.dispatchAll();
+
+        assertThat(mFakeOtDaemon.isTrelEnabled()).isFalse();
+    }
+
+    @Test
+    public void initialize_trelFeatureEnabled_setTrelEnabledAtOtDamon() throws Exception {
+        runAsShell(
+                WRITE_DEVICE_CONFIG,
+                WRITE_ALLOWLISTED_DEVICE_CONFIG,
+                () ->
+                        DeviceConfig.setProperty(
+                                "thread_network", "TrelFeature__enabled", "true", false));
+        mService.initialize();
+        mTestLooper.dispatchAll();
+
+        assertThat(mFakeOtDaemon.isTrelEnabled()).isTrue();
+    }
+
+    @Test
     public void getMeshcopTxtAttributes_emptyVendorName_accepted() {
         when(mResources.getString(eq(R.string.config_thread_vendor_name))).thenReturn("");