diff --git a/tunnel/default.go b/tunnel/default.go
index 6b74bfa8..0cb35eba 100644
--- a/tunnel/default.go
+++ b/tunnel/default.go
@@ -821,8 +821,8 @@ func (t *tun) close() error {
 	}
 
 	// close the listener
-	//return t.listener.Close()
-	return nil
+	// this appears to be blocking
+	return t.listener.Close()
 }
 
 func (t *tun) Address() string {