diff --git a/lib/tun2/server.go b/lib/tun2/server.go
index 0e04143..7893735 100644
--- a/lib/tun2/server.go
+++ b/lib/tun2/server.go
@@ -182,7 +182,7 @@ func (s *Server) ListenAndServe() error {
 						c.cancel()
 					}
 
-					_, err = stream.Read(make([]byte, 3000))
+					_, err = stream.Read(make([]byte, 30))
 					if err != nil {
 						ln.Error(err)
 						c.cancel()