On a side note, I've had fun playing with something like this with Caddy and StepCA and bind running in a homelab. I've managed to, using the rfc2136 plugin, managed to rotate certs every ten minutes.<p>Every six days is fine, just use something like Caddy that rotates the certs for you and it should just be set it and forget it.<p>Yes, I realize this is a bit glib.