1.21.1 (February 22, 2022)
Changes expected to improve the state of the world and are unlikely to have negative effects
data plane: fix crash when internal redirect selects a route configured with direct response or redirect actions.
jwt_authn: fixed the crash when a CONNECT request is sent to JWT filter configured with regex match on the Host header.
tcp_proxy: fix a crash that occurs when configured for upstream tunneling and the downstream connection disconnects while the the upstream connection or http/2 stream is still being established.
upstream: fix stack overflow when a cluster with large number of idle connections is removed.