diff --git a/src/device.go b/src/device.go
index 61c87bc..8567a36 100644
--- a/src/device.go
+++ b/src/device.go
@@ -205,6 +205,7 @@ func (device *Device) Close() {
 	device.RemoveAllPeers()
 	close(device.signal.stop)
 	closeUDPConn(device)
+	device.tun.device.Close()
 }
 
 func (device *Device) WaitChannel() chan struct{} {