Als erstes sicherstellen,daß Nginx auch per IPv6 lauscht

vi /etc/nginx/sites-enabled/sub.example.com

server {
listen 80;
listen [::]:80;
#listen 443 ssl http2;
#listen [::]:443 ssl http2;

server_name sub.example.com;
#ssl_certificate /etc/acme.sh/sub.example.com/fullchain.pem;
#ssl_certificate_key /etc/acme.sh/sub.example.com/privkey.pem;

<Rest der Config>

acme.sh –issue –nginx -d sub.example.com

mkdir -p /etc/acme.sh/sub.example.com

acme.sh –install-cert -d sub.example.com –key-file /etc/acme.sh/sub.example.com/privkey.pem –fullchain-file /etc/acme.sh/sub.example.com/fullchain.pem

vi /etc/nginx/sites-enabled/sub.example.com

• # entfernen
• :wq

service nginx reload