> All you need is an A record pointing to your 192.x.x.x, acme capable dns host and a modern reverse proxy
And to distribute keys that allow those appliances to update the DNS records, to secure those keys, have an a way to install those keys (and update/rotate them), and make sure your DNS host is supported by your acme client.
And to distribute keys that allow those appliances to update the DNS records, to secure those keys, have an a way to install those keys (and update/rotate them), and make sure your DNS host is supported by your acme client.