Understandable. And in that case, the registry _would_ be providing X-Docker-Endpoints header, for the pull of an image, right? Therefore, if that header is _not_ present, then it is implied that the endpoint is itself. I'm not removing the configuration of endpoints, just adding the use-case that the registry being accessed by docker pull may be all-in-one, and there is not a need for a header to re-enforce that.