Does Certbot currently support the ACME dns-persist-01 challenge? If not, is there a roadmap or timeline for adding support? I'm looking to validate my domain once using a persistent DNS TXT record and then issue and renew certificates without creating a new DNS challenge for every renewal. If Certbot doesn't support this yet, are there any ACME clients that already support dns-persist-01 with Let's Encrypt?
Let's Encrypt does not support dns-persist-01 yet according to Dns-persist-01 deployment status and timeline - #17 by aarongable anyway. And the Certbot dev team is quite small, so implementation of new features can take a while.
Edit: looks like there already is a PR for it on the Certbot GH repo though: Add dns-persist-01 challenge type to the manual plugin by wgreenberg · Pull Request #10633 · certbot/certbot · GitHub. You can follow that.