One of my ISPC servers is going to get a new IPv6 adress. I will lower the TTL for all the related AAAA records to 60 seconds. Now I'm wondering if there will be a issue with Let's Encrypt. If I change the IPv6 adress for all sites, will LE be able to issue a new certificate, or do I have to disable LE and re-enable it? Any other things I shouldn't forget?