1 files changed, 2 insertions, 0 deletions
diff --git a/tunDevice.h b/tunDevice.h
index 6fdcc2d..ee8b45d 100644
--- a/tunDevice.h
+++ b/tunDevice.h
@@ -32,6 +32,7 @@
 #define _TUNDEVICE_H_
 
 #include "buffer.h"
+#include "threadUtils.hpp"
 
 class TunDevice
 {
@@ -53,6 +54,7 @@ private:
   void operator=(const TunDevice &src);
   TunDevice(const TunDevice &src);
 
+  Mutex io_mutex_;
   struct tuntap *dev_;
 };