incorporate wireguard daemon with network interface

tun/src/unix/mod.rs

@@ -44,7 +44,11 @@ impl TunInterface {
     #[throws]
     #[instrument]
     pub fn recv(&mut self, buf: &mut [u8]) -> usize {
-        self.socket.read(buf)?
+        // there might be a more efficient way to implement this
+        let tmp_buf = &mut [0u8; 1500];
+        let len = self.socket.read(tmp_buf)?;
+        buf[..len-4].copy_from_slice(&tmp_buf[4..len]);
+        len-4
     }
 }