diff --git a/src/rendezvous_server.rs b/src/rendezvous_server.rs
index 924c1a2..39dc13c 100644
--- a/src/rendezvous_server.rs
+++ b/src/rendezvous_server.rs
@@ -789,7 +789,7 @@ impl RendezvousServer {
 
     #[inline]
     async fn send_to_tcp(&mut self, msg: RendezvousMessage, addr: SocketAddr) {
-        let mut tcp = self.tcp_punch.lock().await.remove(&addr);
+        let mut tcp = self.tcp_punch.lock().await.remove(&try_into_v4(addr));
         tokio::spawn(async move {
             Self::send_to_sink(&mut tcp, msg).await;
         });
@@ -817,7 +817,7 @@ impl RendezvousServer {
         msg: RendezvousMessage,
         addr: SocketAddr,
     ) -> ResultType<()> {
-        let mut sink = self.tcp_punch.lock().await.remove(&addr);
+        let mut sink = self.tcp_punch.lock().await.remove(&try_into_v4(addr));
         Self::send_to_sink(&mut sink, msg).await;
         Ok(())
     }
@@ -1126,7 +1126,7 @@ impl RendezvousServer {
             }
         }
         if sink.is_none() {
-            self.tcp_punch.lock().await.remove(&addr);
+            self.tcp_punch.lock().await.remove(&try_into_v4(addr));
         }
         log::debug!("Tcp connection from {:?} closed", addr);
         Ok(())