v1.22.0#minor-behavior-changes
- config: type URL is used to lookup extensions regardless of the name field. This may cause problems for empty filter configurations or mis-matched protobuf as the typed configurations. This behavioral change can be temporarily reverted by setting runtime guard envoy.reloadable_features.no_extension_lookup_by_name to false.
This makes out current configs invalid for envoy >=1.22 as we need to explicitly set the type URL.