Supported ACME protocol Versions

Which ACME protocol is supported for Traefik v2. I can't seem to find any mention in my searches.

Thank you

Do you mean challenges ?

The protocol is ACME v2 RFC 8555

Implemented via lego

I am looking to see if Traefik v2 supports ACME v1 in particular.

ACME v1 has been permanently disabled by Let's Encrypt.

Traefik support only ACME v2 RFC 8555

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