Listen on both IPv4 and IPv6

This is kind of the universal Nginx configuration. It will listen on both IPv4 and IPv6.

server {
    listen 80;
    listen [::]:80;
    server_name example.com;
    root /var/www/example.com;
}

I ended up with the following configuration for my pxy.fi site.

server {
    listen 80 default_server;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name pxy.fi;

    # Other stuff going on here
}

First I redirect all HTTP requests to HTTPS. And I listen on both IPv4 and IPv6.

There is some discussion about this on ServerFault, but I went with the separation of the two directives since it is easier to read.

Resources and References

• ServerFault: “Do you need separate IPv4 and IPv6 listen directives in Nginx?”