Cloudflare's 1.1.1.1 might lead to slower CDN performance

  • > Dear Cloudflare, please turn on ECS by default.

    Cloudflare has made it clear that they won't. From https://developers.cloudflare.com/1.1.1.1/nitty-gritty-detai... ,

    > 1.1.1.1 is a privacy centric resolver so it does not send any client IP information and does not send the EDNS Client Subnet Header to authoritative servers