diff --git a/core/java/android/net/NetworkStateSnapshot.java b/core/java/android/net/NetworkStateSnapshot.java
new file mode 100644
index 0000000..881b373
--- /dev/null
+++ b/core/java/android/net/NetworkStateSnapshot.java
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.Objects;
+
+/**
+ * Snapshot of network state.
+ *
+ * @hide
+ */
+public final class NetworkStateSnapshot implements Parcelable {
+    @NonNull
+    public final LinkProperties linkProperties;
+    @NonNull
+    public final NetworkCapabilities networkCapabilities;
+    @NonNull
+    public final Network network;
+    @Nullable
+    public final String subscriberId;
+    public final int legacyType;
+
+    public NetworkStateSnapshot(@NonNull LinkProperties linkProperties,
+            @NonNull NetworkCapabilities networkCapabilities, @NonNull Network network,
+            @Nullable String subscriberId, int legacyType) {
+        this.linkProperties = Objects.requireNonNull(linkProperties);
+        this.networkCapabilities = Objects.requireNonNull(networkCapabilities);
+        this.network = Objects.requireNonNull(network);
+        this.subscriberId = subscriberId;
+        this.legacyType = legacyType;
+    }
+
+    public NetworkStateSnapshot(@NonNull Parcel in) {
+        linkProperties = in.readParcelable(null);
+        networkCapabilities = in.readParcelable(null);
+        network = in.readParcelable(null);
+        subscriberId = in.readString();
+        legacyType = in.readInt();
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(@NonNull Parcel out, int flags) {
+        out.writeParcelable(linkProperties, flags);
+        out.writeParcelable(networkCapabilities, flags);
+        out.writeParcelable(network, flags);
+        out.writeString(subscriberId);
+        out.writeInt(legacyType);
+    }
+
+    @NonNull
+    public static final Creator<NetworkStateSnapshot> CREATOR =
+            new Creator<NetworkStateSnapshot>() {
+        @NonNull
+        @Override
+        public NetworkStateSnapshot createFromParcel(@NonNull Parcel in) {
+            return new NetworkStateSnapshot(in);
+        }
+
+        @NonNull
+        @Override
+        public NetworkStateSnapshot[] newArray(int size) {
+            return new NetworkStateSnapshot[size];
+        }
+    };
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (!(o instanceof NetworkStateSnapshot)) return false;
+        NetworkStateSnapshot that = (NetworkStateSnapshot) o;
+        return legacyType == that.legacyType
+                && Objects.equals(linkProperties, that.linkProperties)
+                && Objects.equals(networkCapabilities, that.networkCapabilities)
+                && Objects.equals(network, that.network)
+                && Objects.equals(subscriberId, that.subscriberId);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(linkProperties, networkCapabilities, network, subscriberId, legacyType);
+    }
+}