diff --git a/wg-event-gen/src/gen.rs b/wg-event-gen/src/gen.rs
index 8f567c2..8091896 100644
--- a/wg-event-gen/src/gen.rs
+++ b/wg-event-gen/src/gen.rs
@@ -62,6 +62,15 @@ pub(crate) fn gen_events(
                         //dbg!(other);
                     }
                 }
+                if prev.traffic != cur.traffic {
+                    if let ((p_tx, p_rx), (c_tx, c_rx)) = (prev.traffic, cur.traffic) {
+                        listeners.fire(Event::Tranfered {
+                            peer: &cur,
+                            tx: c_tx - p_tx,
+                            rx: c_rx - p_rx,
+                        });
+                    }
+                }
             }
             (None, Some(cur)) => listeners.fire(Event::Added(&cur)),
             (Some(prev), None) => listeners.fire(Event::Removed(&prev)),
diff --git a/wg-event-gen/src/listener.rs b/wg-event-gen/src/listener.rs
index 0d6e0bc..8b8562f 100644
--- a/wg-event-gen/src/listener.rs
+++ b/wg-event-gen/src/listener.rs
@@ -13,6 +13,7 @@ pub enum Event<'a> {
     Connected(&'a Peer),
     Disconnected(&'a Peer),
     Roamed(&'a Peer, SocketAddr),
+    Tranfered { peer: &'a Peer, tx: u64, rx: u64 },
 }
 
 pub trait EventListener {
@@ -40,6 +41,9 @@ impl EventListener for LogListener {
                 previous_addr,
                 peer.endpoint.unwrap()
             ),
+            Event::Tranfered { peer, tx, rx } => {
+                println!("{} transfered {} up, {} down", peer.key, tx, rx)
+            }
             _ => unimplemented!(),
         }
     }