diff --git a/Android.bp b/Android.bp
new file mode 100644
index 0000000..d0d3276
--- /dev/null
+++ b/Android.bp
@@ -0,0 +1,28 @@
+//
+// Copyright (C) 2019 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.
+//
+
+// Stub APK to define permissions for NetworkStack
+android_app {
+    name: "NetworkPermissionConfig",
+    // TODO: mark app as hasCode=false in manifest once soong stops complaining about apps without
+    // a classes.dex.
+    srcs: ["src/**/*.java"],
+    platform_apis: true,
+    min_sdk_version: "28",
+    certificate: "networkstack",
+    privileged: true,
+    manifest: "AndroidManifest.xml",
+}
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
new file mode 100644
index 0000000..34f987c
--- /dev/null
+++ b/AndroidManifest.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+ * Copyright (C) 2019 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.
+ */
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.networkstack.permissionconfig"
+    android:sharedUserId="android.uid.networkstack"
+    android:versionCode="11"
+    android:versionName="Q-initial">
+    <uses-sdk android:minSdkVersion="28" android:targetSdkVersion="28" />
+    <!--
+    This package only exists to define the below permissions, and enforce that they are only
+    granted to apps sharing the same signature.
+    Permissions defined here are intended to be used only by the NetworkStack: both
+    NetworkStack and this stub APK are to be signed with a dedicated certificate to ensure
+    that, with the below permissions being signature permissions.
+
+    This APK *must* be installed, even if the NetworkStack app is not installed, because otherwise,
+    any application will be able to define this permission and the system will give that application
+    full access to the network stack.
+     -->
+    <permission android:name="android.permission.MAINLINE_NETWORK_STACK"
+                android:protectionLevel="signature"/>
+
+    <application android:name="com.android.server.NetworkPermissionConfig"/>
+</manifest>
diff --git a/src/com/android/server/NetworkPermissionConfig.java b/src/com/android/server/NetworkPermissionConfig.java
new file mode 100644
index 0000000..c904e23
--- /dev/null
+++ b/src/com/android/server/NetworkPermissionConfig.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2019 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;
+
+import android.app.Application;
+
+/**
+ * Empty application for NetworkPermissionConfig that only exists because
+ * soong builds complain if APKs have no source file.
+ */
+public class NetworkPermissionConfig extends Application {
+}