AFIK reverting 6761 got us from pretty deterministic failure to generally passing but I've seen 2 failures since

https://circleci.com/gh/envoyproxy/envoy/213854?utm_campaign=workflow-failed&utm_medium=email&utm_source=notification
https://circleci.com/gh/envoyproxy/envoy/213482?utm_campaign=workflow-failed&utm_medium=email&utm_source=notification