- listen 80 deferred backlog=16384 reuseport fastopen=2048 http2 default_server;;
- listen 443 ssl deferred backlog=16384 reuseport fastopen=2048 http2; # No default_server here unless certificate specified here too.
+ listen 80 deferred backlog=16384 reuseport default_server;
+ listen 443 ssl deferred backlog=16384 reuseport http2; # No default_server here unless certificate specified here too.
+ listen [::]:80 deferred backlog=16384 reuseport default_server;
+ listen [::]:443 ssl deferred backlog=16384 reuseport http2; # No default_server here unless certificate specified here too.