def _on_new_connection_id_delivery(
        self, delivery: QuicDeliveryState, connection_id: QuicConnectionId
    ) -> None:
        """
        Callback when a NEW_CONNECTION_ID frame is acknowledged or lost.
        """
        if delivery != QuicDeliveryState.ACKED:
            connection_id.was_sent = False

        Callback when a NEW_CONNECTION_ID frame is acknowledged or lost.
        
src/aioquic/quic/connection.py