diff --git a/contexthub/aidl/vts/VtsAidlHalContextHubTargetTest.cpp b/contexthub/aidl/vts/VtsAidlHalContextHubTargetTest.cpp
index f544d83..89a9e23 100644
--- a/contexthub/aidl/vts/VtsAidlHalContextHubTargetTest.cpp
+++ b/contexthub/aidl/vts/VtsAidlHalContextHubTargetTest.cpp
@@ -133,10 +133,6 @@
     ASSERT_TRUE(contextHub->registerCallback(getHubId(), cb).isOk());
 }
 
-TEST_P(ContextHubAidl, TestRegisterNullCallback) {
-    ASSERT_TRUE(contextHub->registerCallback(getHubId(), nullptr).isOk());
-}
-
 // Helper callback that puts the async appInfo callback data into a promise
 class QueryAppsCallback : public android::hardware::contexthub::BnContextHubCallback {
   public:
@@ -195,7 +191,6 @@
         GTEST_SKIP() << "Not supported -> old API; or not implemented";
     } else {
         ASSERT_TRUE(status.isOk());
-        ASSERT_FALSE(preloadedNanoappIds.empty());
     }
 }
 
@@ -323,8 +318,6 @@
 
     ASSERT_TRUE(contextHub->onSettingChanged(setting, true /* enabled */).isOk());
     ASSERT_TRUE(contextHub->onSettingChanged(setting, false /* enabled */).isOk());
-
-    ASSERT_TRUE(contextHub->registerCallback(getHubId(), nullptr).isOk());
 }
 
 TEST_P(ContextHubAidl, TestOnLocationSettingChanged) {
diff --git a/radio/1.0/vts/functional/radio_hidl_hal_misc.cpp b/radio/1.0/vts/functional/radio_hidl_hal_misc.cpp
index 624d003..ee8b4dc 100644
--- a/radio/1.0/vts/functional/radio_hidl_hal_misc.cpp
+++ b/radio/1.0/vts/functional/radio_hidl_hal_misc.cpp
@@ -654,6 +654,8 @@
         ASSERT_TRUE(CheckAnyOfErrors(radioRsp->rspInfo.error,
                                      {RadioError::NONE, RadioError::REQUEST_NOT_SUPPORTED}));
     }
+    // wait until modem reset finishes
+    sleep(10);
     LOG(DEBUG) << "nvResetConfig finished";
 }
 
diff --git a/radio/aidl/vts/radio_data_test.cpp b/radio/aidl/vts/radio_data_test.cpp
index aa6ac88..3eedc14 100644
--- a/radio/aidl/vts/radio_data_test.cpp
+++ b/radio/aidl/vts/radio_data_test.cpp
@@ -531,8 +531,7 @@
 
         ASSERT_TRUE(CheckAnyOfErrors(
                 radioRsp_data->rspInfo.error,
-                {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE, RadioError::INVALID_ARGUMENTS,
-                 RadioError::REQUEST_NOT_SUPPORTED}));
+                {RadioError::INVALID_ARGUMENTS, RadioError::REQUEST_NOT_SUPPORTED}));
     }
 }
 
@@ -549,8 +548,7 @@
 
     ASSERT_TRUE(
             CheckAnyOfErrors(radioRsp_data->rspInfo.error,
-                             {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE,
-                              RadioError::INVALID_ARGUMENTS, RadioError::REQUEST_NOT_SUPPORTED}));
+                             {RadioError::INVALID_ARGUMENTS, RadioError::REQUEST_NOT_SUPPORTED}));
 }
 
 /*
diff --git a/radio/aidl/vts/radio_modem_test.cpp b/radio/aidl/vts/radio_modem_test.cpp
index 3454f33..67747a8 100644
--- a/radio/aidl/vts/radio_modem_test.cpp
+++ b/radio/aidl/vts/radio_modem_test.cpp
@@ -290,6 +290,8 @@
         ASSERT_TRUE(CheckAnyOfErrors(radioRsp_modem->rspInfo.error,
                                      {RadioError::NONE, RadioError::REQUEST_NOT_SUPPORTED}));
     }
+    // wait until modem reset finishes
+    sleep(10);
     LOG(DEBUG) << "nvResetConfig finished";
 }
 
diff --git a/radio/aidl/vts/radio_network_test.cpp b/radio/aidl/vts/radio_network_test.cpp
index 57bd4fb..0b7c16e 100644
--- a/radio/aidl/vts/radio_network_test.cpp
+++ b/radio/aidl/vts/radio_network_test.cpp
@@ -66,12 +66,20 @@
 }
 
 /*
- * Test IRadioNetwork.setAllowedNetworkTypesBitmap for the response returned.
+ * Test IRadioNetwork.setAllowedNetworkTypesBitmap and IRadioNetwork.getAllowedNetworkTypesBitmap
+ * for the response returned.
  */
-TEST_P(RadioNetworkTest, setAllowedNetworkTypesBitmap) {
+TEST_P(RadioNetworkTest, setGetAllowedNetworkTypesBitmap) {
     serial = GetRandomSerialNumber();
-    int32_t allowedNetworkTypesBitmap = static_cast<int32_t>(RadioAccessFamily::LTE);
 
+    // save current value
+    radio_network->getAllowedNetworkTypesBitmap(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    int32_t currentAllowedNetworkTypesBitmap = radioRsp_network->networkTypeBitmapResponse;
+
+    // set new value
+    int32_t allowedNetworkTypesBitmap = static_cast<int32_t>(RadioAccessFamily::LTE);
+    serial = GetRandomSerialNumber();
     radio_network->setAllowedNetworkTypesBitmap(serial, allowedNetworkTypesBitmap);
 
     EXPECT_EQ(std::cv_status::no_timeout, wait());
@@ -83,20 +91,6 @@
              RadioError::MODE_NOT_SUPPORTED, RadioError::INTERNAL_ERR, RadioError::MODEM_ERR,
              RadioError::INVALID_ARGUMENTS, RadioError::REQUEST_NOT_SUPPORTED,
              RadioError::NO_RESOURCES}));
-}
-
-/*
- * Test IRadioNetwork.getAllowedNetworkTypesBitmap for the response returned.
- */
-TEST_P(RadioNetworkTest, getAllowedNetworkTypesBitmap) {
-    serial = GetRandomSerialNumber();
-    int32_t allowedNetworkTypesBitmap = static_cast<int32_t>(RadioAccessFamily::LTE);
-
-    radio_network->setAllowedNetworkTypesBitmap(serial, allowedNetworkTypesBitmap);
-
-    EXPECT_EQ(std::cv_status::no_timeout, wait());
-    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_network->rspInfo.type);
-    EXPECT_EQ(serial, radioRsp_network->rspInfo.serial);
 
     if (radioRsp_network->rspInfo.error == RadioError::NONE) {
         sleep(3);  // wait for modem
@@ -112,7 +106,16 @@
                  RadioError::OPERATION_NOT_ALLOWED, RadioError::MODE_NOT_SUPPORTED,
                  RadioError::INVALID_ARGUMENTS, RadioError::MODEM_ERR,
                  RadioError::REQUEST_NOT_SUPPORTED, RadioError::NO_RESOURCES}));
+        if (radioRsp_network->rspInfo.error == RadioError::NONE) {
+            // verify we get the value we set
+            ASSERT_EQ(radioRsp_network->networkTypeBitmapResponse, allowedNetworkTypesBitmap);
+        }
     }
+
+    // reset value to previous
+    serial = GetRandomSerialNumber();
+    radio_network->setAllowedNetworkTypesBitmap(serial, currentAllowedNetworkTypesBitmap);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
 }
 
 /*
@@ -947,7 +950,7 @@
     RadioAccessSpecifier specifier850 = {
             .accessNetwork = AccessNetwork::GERAN, .bands = band850, .channels = {128, 129}};
 
-    NetworkScanRequest request = {.type = NetworkScanRequest::SCAN_TYPE_ONE_SHOT,
+    NetworkScanRequest request = {.type = NetworkScanRequest::SCAN_TYPE_PERIODIC,
                                   .interval = 4,
                                   .specifiers = {specifierP900, specifier850},
                                   .maxSearchTime = 60,
@@ -988,7 +991,7 @@
     RadioAccessSpecifier specifier850 = {
             .accessNetwork = AccessNetwork::GERAN, .bands = band850, .channels = {128, 129}};
 
-    NetworkScanRequest request = {.type = NetworkScanRequest::SCAN_TYPE_ONE_SHOT,
+    NetworkScanRequest request = {.type = NetworkScanRequest::SCAN_TYPE_PERIODIC,
                                   .interval = 301,
                                   .specifiers = {specifierP900, specifier850},
                                   .maxSearchTime = 60,
@@ -1521,7 +1524,7 @@
     }
 
     // 32 bit system might return invalid mcc and mnc string "\xff\xff..."
-    if (checkMccMnc && mcc.size() < 4 && mnc.size() < 4) {
+    if (checkMccMnc && mcc.size() == 3 && (mnc.size() == 2 || mnc.size() == 3)) {
         int mcc_int = stoi(mcc);
         int mnc_int = stoi(mnc);
         EXPECT_TRUE(mcc_int >= 0 && mcc_int <= 999);
diff --git a/tetheroffload/aidl/Android.bp b/tetheroffload/aidl/Android.bp
index b3b6ebf..6de27c3 100644
--- a/tetheroffload/aidl/Android.bp
+++ b/tetheroffload/aidl/Android.bp
@@ -4,7 +4,6 @@
 
 aidl_interface {
     name: "android.hardware.tetheroffload",
-    owner: "google",
     vendor_available: true,
     srcs: ["android/hardware/tetheroffload/*.aidl"],
     stability: "vintf",
@@ -24,4 +23,12 @@
             apps_enabled: false,
         },
     },
+    versions_with_info: [
+        {
+            version: "1",
+            imports: [],
+        },
+    ],
+    frozen: true,
+
 }
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/.hash b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/.hash
new file mode 100644
index 0000000..e7b452e
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/.hash
@@ -0,0 +1 @@
+ba3f0342e13af942628a6c00e920d55ce8ad1ea3
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ForwardedStats.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ForwardedStats.aidl
new file mode 100644
index 0000000..493a698
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ForwardedStats.aidl
@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@VintfStability
+parcelable ForwardedStats {
+  long rxBytes;
+  long txBytes;
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IOffload.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IOffload.aidl
new file mode 100644
index 0000000..9a58b1f
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IOffload.aidl
@@ -0,0 +1,46 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@VintfStability
+interface IOffload {
+  void initOffload(in ParcelFileDescriptor fd1, in ParcelFileDescriptor fd2, in android.hardware.tetheroffload.ITetheringOffloadCallback cb);
+  void stopOffload();
+  void setLocalPrefixes(in String[] prefixes);
+  android.hardware.tetheroffload.ForwardedStats getForwardedStats(in String upstream);
+  void setDataWarningAndLimit(in String upstream, in long warningBytes, in long limitBytes);
+  void setUpstreamParameters(in String iface, in String v4Addr, in String v4Gw, in String[] v6Gws);
+  void addDownstream(in String iface, in String prefix);
+  void removeDownstream(in String iface, in String prefix);
+  const int ERROR_CODE_UNUSED = 0;
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IPv4AddrPortPair.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IPv4AddrPortPair.aidl
new file mode 100644
index 0000000..2b42f0c
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IPv4AddrPortPair.aidl
@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@VintfStability
+parcelable IPv4AddrPortPair {
+  String addr;
+  int port;
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ITetheringOffloadCallback.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ITetheringOffloadCallback.aidl
new file mode 100644
index 0000000..4eb7d04
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ITetheringOffloadCallback.aidl
@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@VintfStability
+interface ITetheringOffloadCallback {
+  oneway void onEvent(in android.hardware.tetheroffload.OffloadCallbackEvent event);
+  oneway void updateTimeout(in android.hardware.tetheroffload.NatTimeoutUpdate params);
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NatTimeoutUpdate.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NatTimeoutUpdate.aidl
new file mode 100644
index 0000000..9eddaa2
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NatTimeoutUpdate.aidl
@@ -0,0 +1,40 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@VintfStability
+parcelable NatTimeoutUpdate {
+  android.hardware.tetheroffload.IPv4AddrPortPair src;
+  android.hardware.tetheroffload.IPv4AddrPortPair dst;
+  android.hardware.tetheroffload.NetworkProtocol proto;
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NetworkProtocol.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NetworkProtocol.aidl
new file mode 100644
index 0000000..52bd2a6
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NetworkProtocol.aidl
@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@Backing(type="int") @VintfStability
+enum NetworkProtocol {
+  TCP = 6,
+  UDP = 17,
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/OffloadCallbackEvent.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/OffloadCallbackEvent.aidl
new file mode 100644
index 0000000..026e18e
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/OffloadCallbackEvent.aidl
@@ -0,0 +1,43 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@Backing(type="int") @VintfStability
+enum OffloadCallbackEvent {
+  OFFLOAD_STARTED = 1,
+  OFFLOAD_STOPPED_ERROR = 2,
+  OFFLOAD_STOPPED_UNSUPPORTED = 3,
+  OFFLOAD_SUPPORT_AVAILABLE = 4,
+  OFFLOAD_STOPPED_LIMIT_REACHED = 5,
+  OFFLOAD_WARNING_REACHED = 6,
+}