diff --git a/examples/read.rs b/examples/read.rs
index 7156072..5909dac 100644
--- a/examples/read.rs
+++ b/examples/read.rs
@@ -38,8 +38,8 @@ fn main_entry(quit: Receiver<()>) -> Result<(), BoxError> {
 
     let mut config = tun_rs::Configuration::default();
 
-    // #[cfg(any(target_os = "windows", target_os = "linux", target_os = "freebsd",))]
-    // config.layer(Layer::L2);
+    #[cfg(any(target_os = "windows", target_os = "linux", target_os = "freebsd",))]
+    config.layer(Layer::L2);
 
     config
         // .address_with_prefix(