Some ACME clients that I think currently support IP addresses are acme.sh, lego, traefik, acmez, caddy, and cert-manager. Certbot support should hopefully land pretty soon.

cert-manager maintainter chiming in to say that yes, cert-manager should support IP address certs - if anyone finds any bugs, we'd love to hear from you!

We also support ACME profiles (required for short lived certs) as of v1.18 which is our oldest currently supported[1] version.

We've got some basic docs[2] available. Profiles are set on a per-issuer basis, so it's easy to have two separate ACME issuers, one issuing longer lived certs and one issuing shorter, allowing for a gradual migration to shorter certs.

[1]: https://cert-manager.io/docs/releases/ [2]: https://cert-manager.io/docs/configuration/acme/#acme-certif...