.. _version_history_1.33.1: 1.33.1 (March 21, 2025) ======================== Bug fixes --------- *Changes expected to improve the state of the world and are unlikely to have negative effects* * **connection pool**: Fixed a bug in :ref:`preconnecting ` where established connection unused capacity was not considered in the logic to establish new connections, resulting in new connections anytime there was not a connection currently in the process of being established. This resulted in far too many connections being established, with the only bounds being cluster circuit breaker limits or upstream service limits. * **ext_proc**: Fixes a bug where local replies were incorrectly sent to the ext_proc server for external processing. This change can be temporarily reverted by setting runtime guard ``envoy_reloadable_features_skip_ext_proc_on_local_reply`` to ``false``. * **router**: Fixes an Envoy crash issue when a local reply is sent. This change can be temporarily reverted by setting runtime guard ``envoy_reloadable_features_router_filter_resetall_on_local_reply`` to ``false``.