Add a TODO for inbound error handling cleanup

zebra-network/src/peer/connection.rs

@@ -873,6 +873,7 @@ where
 
         if self.svc.ready_and().await.is_err() {
             // Treat all service readiness errors as Overloaded
+            // TODO: treat `TryRecvError::Closed` in `Inbound::poll_ready` as a fatal error (#1655)
             self.fail_with(PeerError::Overloaded);
             return;
         }