diff --git a/framework/api/current.txt b/framework/api/current.txt
index 32dcfd9..797c107 100644
--- a/framework/api/current.txt
+++ b/framework/api/current.txt
@@ -103,6 +103,7 @@
     method public void requestNetwork(@NonNull android.net.NetworkRequest, @NonNull android.net.ConnectivityManager.NetworkCallback, int);
     method public void requestNetwork(@NonNull android.net.NetworkRequest, @NonNull android.net.ConnectivityManager.NetworkCallback, @NonNull android.os.Handler, int);
     method public void requestNetwork(@NonNull android.net.NetworkRequest, @NonNull android.app.PendingIntent);
+    method @FlaggedApi("com.android.net.flags.ipv6_over_ble") public void reserveNetwork(@NonNull android.net.NetworkRequest, @NonNull android.os.Handler, @NonNull android.net.ConnectivityManager.NetworkCallback);
     method @Deprecated public void setNetworkPreference(int);
     method @Deprecated public static boolean setProcessDefaultNetwork(@Nullable android.net.Network);
     method public void unregisterNetworkCallback(@NonNull android.net.ConnectivityManager.NetworkCallback);
diff --git a/framework/src/android/net/ConnectivityManager.java b/framework/src/android/net/ConnectivityManager.java
index 33a443e..9016d13 100644
--- a/framework/src/android/net/ConnectivityManager.java
+++ b/framework/src/android/net/ConnectivityManager.java
@@ -21,6 +21,7 @@
 import static android.net.NetworkRequest.Type.LISTEN;
 import static android.net.NetworkRequest.Type.LISTEN_FOR_BEST;
 import static android.net.NetworkRequest.Type.REQUEST;
+import static android.net.NetworkRequest.Type.RESERVATION;
 import static android.net.NetworkRequest.Type.TRACK_DEFAULT;
 import static android.net.NetworkRequest.Type.TRACK_SYSTEM_DEFAULT;
 import static android.net.QosCallback.QosCallbackRegistrationException;
@@ -4271,12 +4272,18 @@
         private static final int METHOD_ONLOST = 6;
 
         /**
-         * Called if no network is found within the timeout time specified in
-         * {@link #requestNetwork(NetworkRequest, NetworkCallback, int)} call or if the
-         * requested network request cannot be fulfilled (whether or not a timeout was
-         * specified). When this callback is invoked the associated
-         * {@link NetworkRequest} will have already been removed and released, as if
-         * {@link #unregisterNetworkCallback(NetworkCallback)} had been called.
+         * If the callback was registered with one of the {@code requestNetwork} methods, this will
+         * be called if no network is found within the timeout specified in {@link
+         * #requestNetwork(NetworkRequest, NetworkCallback, int)} call or if the requested network
+         * request cannot be fulfilled (whether or not a timeout was specified).
+         *
+         * If the callback was registered when reserving a network, this method indicates that the
+         * reservation is removed. It can be called when the reservation is requested, because the
+         * system could not satisfy the reservation, or after the reserved network connects.
+         *
+         * When this callback is invoked the associated {@link NetworkRequest} will have already
+         * been removed and released, as if {@link #unregisterNetworkCallback(NetworkCallback)} had
+         * been called.
          */
         @FilteredCallback(methodId = METHOD_ONUNAVAILABLE, calledByCallbackId = CALLBACK_UNAVAIL)
         public void onUnavailable() {}
@@ -5008,6 +5015,41 @@
     }
 
     /**
+     * Reserve a network to satisfy a set of {@link NetworkCapabilities}.
+     *
+     * Some types of networks require the system to generate (i.e. reserve) some set of information
+     * before a network can be connected. For such networks, {@link #reserveNetwork} can be used
+     * which may lead to a call to {@link NetworkCallback#onReserved(NetworkCapabilities)}
+     * containing the {@link NetworkCapabilities} that were reserved.
+     *
+     * A reservation reserves at most one network. If the network connects, a reservation request
+     * behaves similar to a request filed using {@link #requestNetwork}. The provided {@link
+     * NetworkCallback} will only be called for the reserved network.
+     *
+     * If the system determines that the requested reservation can never be fulfilled, {@link
+     * NetworkCallback#onUnavailable} is called, the reservation is released by the system, and the
+     * provided callback can be reused. Otherwise, the reservation remains in place until the
+     * requested network connects. There is no guarantee that the reserved network will ever
+     * connect.
+     *
+     * @param request {@link NetworkRequest} describing this request.
+     * @param handler {@link Handler} to specify the thread upon which the callback will be invoked.
+     * @param networkCallback The {@link NetworkCallback} to be utilized for this request. Note
+     *                        the callback must not be shared - it uniquely specifies this request.
+     */
+    // TODO: add executor overloads for all network request methods. Any method that passed an
+    // Executor could process the messages on the singleton ConnectivityThread Handler.
+    @SuppressLint("ExecutorRegistration")
+    @FlaggedApi(Flags.FLAG_IPV6_OVER_BLE)
+    public void reserveNetwork(@NonNull NetworkRequest request,
+            @NonNull Handler handler,
+            @NonNull NetworkCallback networkCallback) {
+        final CallbackHandler cbHandler = new CallbackHandler(handler);
+        final NetworkCapabilities nc = request.networkCapabilities;
+        sendRequestForNetwork(nc, networkCallback, 0, RESERVATION, TYPE_NONE, cbHandler);
+    }
+
+    /**
      * Request a network to satisfy a set of {@link NetworkCapabilities}, limited
      * by a timeout.
      *