diff --git a/tetheroffload/aidl/default/Offload.h b/tetheroffload/aidl/default/Offload.h
new file mode 100644
index 0000000..a1f6bce
--- /dev/null
+++ b/tetheroffload/aidl/default/Offload.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/tetheroffload/BnOffload.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace tetheroffload {
+namespace impl {
+namespace example {
+
+using aidl::android::hardware::tetheroffload::ForwardedStats;
+using aidl::android::hardware::tetheroffload::ITetheringOffloadCallback;
+
+class Offload : public BnOffload {
+  public:
+    ndk::ScopedAStatus addDownstream(const std::string& in_iface,
+                                     const std::string& in_prefix) override;
+    ndk::ScopedAStatus getForwardedStats(const std::string& in_upstream,
+                                         ForwardedStats* _aidl_return) override;
+    ndk::ScopedAStatus initOffload(
+            const ndk::ScopedFileDescriptor& in_fd1, const ndk::ScopedFileDescriptor& in_fd2,
+            const std::shared_ptr<ITetheringOffloadCallback>& in_cb) override;
+    ndk::ScopedAStatus removeDownstream(const std::string& in_iface,
+                                        const std::string& in_prefix) override;
+    ndk::ScopedAStatus setDataWarningAndLimit(const std::string& in_upstream,
+                                              int64_t in_warningBytes,
+                                              int64_t in_limitBytes) override;
+    ndk::ScopedAStatus setLocalPrefixes(const std::vector<std::string>& in_prefixes) override;
+    ndk::ScopedAStatus setUpstreamParameters(const std::string& in_iface,
+                                             const std::string& in_v4Addr,
+                                             const std::string& in_v4Gw,
+                                             const std::vector<std::string>& in_v6Gws) override;
+    ndk::ScopedAStatus stopOffload() override;
+
+  private:
+    bool isInitialized();
+    bool isValidInterface(const std::string& iface);
+    bool isValidIpv4Address(const std::string& repr);
+    bool isValidIpv4Prefix(const std::string& repr);
+    bool isValidIpv6Address(const std::string& repr);
+    bool isValidIpv6Prefix(const std::string& repr);
+    bool isValidIpAddress(const std::string& repr);
+    bool isValidIpPrefix(const std::string& repr);
+    bool validateIpAddressOrPrefix(const std::string& repr, const int expectedFamily,
+                                   const bool isPrefix);
+
+    bool mInitialized = false;
+    ndk::ScopedFileDescriptor mFd1;
+    ndk::ScopedFileDescriptor mFd2;
+};
+
+}  // namespace example
+}  // namespace impl
+}  // namespace tetheroffload
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl