[jcassee]

[Copying my comment from https://news.ycombinator.com/item?id=16112237]

Unfortunately, this means that Traefik's default Let's Encrypt integration (without setting a DNS provider) does not work anymore. Although the logs now say "could not find solver for: http-01", they actually use tls-sni-01.

[BillinghamJ]

The entire Golang autocert functionality relies on this - which presumably Traefik is using

[fapjacks]

Through a twist of fate, I was looking into this over the weekend, and you're correct about Traefik.