diff --git a/mobile/src/main/java/be/mygod/vpnhotspot/TetheringService.kt b/mobile/src/main/java/be/mygod/vpnhotspot/TetheringService.kt
index 49d3cba0..5f5fcee5 100644
--- a/mobile/src/main/java/be/mygod/vpnhotspot/TetheringService.kt
+++ b/mobile/src/main/java/be/mygod/vpnhotspot/TetheringService.kt
@@ -1,13 +1,17 @@
 package be.mygod.vpnhotspot
 
 import android.content.Intent
+import androidx.annotation.RequiresApi
 import be.mygod.vpnhotspot.App.Companion.app
 import be.mygod.vpnhotspot.net.Routing
 import be.mygod.vpnhotspot.net.TetherType
 import be.mygod.vpnhotspot.net.TetheringManager
 import be.mygod.vpnhotspot.net.monitor.IpNeighbourMonitor
 import be.mygod.vpnhotspot.util.Event0
+import be.mygod.vpnhotspot.widget.SmartSnackbar
 import kotlinx.coroutines.*
+import timber.log.Timber
+import java.lang.IllegalStateException
 import java.util.concurrent.ConcurrentHashMap
 
 class TetheringService : IpNeighbourMonitoringService(), TetheringManager.TetheringEventCallback, CoroutineScope {
@@ -62,6 +66,16 @@ class TetheringService : IpNeighbourMonitoringService(), TetheringManager.Tether
         }
     }
 
+    @RequiresApi(30)
+    override fun onOffloadStatusChanged(status: Int) = when (status) {
+        TetheringManager.TETHER_HARDWARE_OFFLOAD_STOPPED, TetheringManager.TETHER_HARDWARE_OFFLOAD_FAILED -> { }
+        TetheringManager.TETHER_HARDWARE_OFFLOAD_STARTED -> {
+            Timber.w("TETHER_HARDWARE_OFFLOAD_STARTED")
+            SmartSnackbar.make(R.string.tethering_manage_offload_enabled).show()
+        }
+        else -> Timber.w(IllegalStateException("Unknown onOffloadStatusChanged $status"))
+    }
+
     private fun onDownstreamsChangedLocked() {
         if (downstreams.isEmpty()) {
             unregisterReceiver()
diff --git a/mobile/src/main/java/be/mygod/vpnhotspot/net/TetheringManager.kt b/mobile/src/main/java/be/mygod/vpnhotspot/net/TetheringManager.kt
index 4938d4f9..bba9723b 100644
--- a/mobile/src/main/java/be/mygod/vpnhotspot/net/TetheringManager.kt
+++ b/mobile/src/main/java/be/mygod/vpnhotspot/net/TetheringManager.kt
@@ -86,10 +86,13 @@ object TetheringManager {
     const val EXTRA_ERRORED_TETHER = "erroredArray"
 
     /** Tethering offload status is stopped.  */
+    @RequiresApi(30)
     const val TETHER_HARDWARE_OFFLOAD_STOPPED = 0
     /** Tethering offload status is started.  */
+    @RequiresApi(30)
     const val TETHER_HARDWARE_OFFLOAD_STARTED = 1
     /** Fail to start tethering offload.  */
+    @RequiresApi(30)
     const val TETHER_HARDWARE_OFFLOAD_FAILED = 2
 
     // tethering types supported by enableTetheringInternal: https://android.googlesource.com/platform/frameworks/base/+/5d36f01/packages/Tethering/src/com/android/networkstack/tethering/Tethering.java#549