diff --git a/.gitignore b/.gitignore
index 9f6f5f4..5b68cf1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 .client
 .output
 sdlan
+sdlan.exe
\ No newline at end of file
diff --git a/src/network/packet.rs b/src/network/packet.rs
index 4ebe8e9..59299a9 100644
--- a/src/network/packet.rs
+++ b/src/network/packet.rs
@@ -742,6 +742,7 @@ async fn handle_tun_packet(
         return;
     }
     let data = origin.unwrap();
+    debug!("ether size is {}", data.len());
     let msg_size = data.len() as u64;
 
     let Ok(dst_mac) = pkt.dst_mac.try_into() else {
@@ -766,8 +767,10 @@ async fn handle_tun_packet(
     debug!("got packet from sock, will send to tun");
     match Ethernet2Header::from_slice(&data) {
         Ok((hdr, rest)) => {
+            debug!("ip size is {}", rest.len());
             let edge = get_edge();
             let self_mac = edge.device_config.get_mac();
+
             /*
             if hdr.destination != self_mac && hdr.destination != BROADCAST_MAC {
                 error!(
@@ -860,7 +863,14 @@ async fn handle_tun_packet(
             } else {
                 println!("got ip packet");
                 println!("got data: {:?}", rest);
-                edge.device.send(rest);
+                match edge.device.send(rest) {
+                    Ok(size) => {
+                        debug!("send to tun {} bytes", size);
+                    }
+                    Err(e) => {
+                        error!("failed to send to device");
+                    }
+                }
                 // edge.tun.send_data_to_tun(Vec::from(hdr.1)).await;
             }
         }
diff --git a/wintun.dll b/wintun.dll
new file mode 100644
index 0000000..aee04e7
Binary files /dev/null and b/wintun.dll differ