Hello,
ACME does'nt listen on port 80 in IPv6. It listen port 80 only in IPv4.
For domain names with only record type AAAA, ACME does'nt work on Proxmox VE.
I haven't software is listen on the port 80 in IPv4 or IPv6.
I took a screenshot of the ACME logs and the "ss -atlp" command when...