Multiple Django/gunicorn/Nginx sites using different IPv6 addresses on one Droplet

Hello,

I turned on IPv6 on my droplet and followed a couple DigitalOcean docs and was able to get a second site running from the same droplet. So, I have one site running with SSL using the IPv4 address and another site with SSL as well (different certificates) using the IPv6 address shown on the droplet’s control panel.

I want to host one more site using another IPv6 address on the same droplet. I followed the instructions on https://www.digitalocean.com/docs/networking/ipv6/how-to/configure-additional-addresses/#enable-new-addresses-on-boot and setup a second address. I can check using ip -6 addr show eth0 and see my second address there. If I go on a web browser and go directly to that IP I can see the Nginx splash screen.

After that I tried to do another gunicorn socket and service and tested it, it works. Then I created another Nginx config under /etc/nginx/sites-available/ (config file below) and linked it to /etc/nginx/sites-enabled/. I setup my domain to point to the second IPv6 address with my domain registrar and on DigitalOcean.

So, in theory (following what I did for the first IPv6 site) everything should work, but when I go to the second domain/IPv6 address on my web browser I still just get the Nginx splash screen. I personally think it is something wrong with how I setup the Nginx config for both IPv6 sites but after a lot of Googleing I have no idea what is wrong.

Nginx config for FIRST IPv6 site (SSL enabled):

server {
    server_name [Pv6:address:1] exampleSite1.com www.exampleSite1.com;

    location = /favicon.ico { access_log off; log_not_found off; }
    location /static/ {
        root /path/to/FIRST/site;
    }

    location / {
        include proxy_params;
        proxy_pass http://unix:/run/exampleSite1.sock;
    }

    listen [::]:443 ssl ipv6only=on; # managed by Certbot
    ssl_certificate /path/to/site/fullchain.pem; # managed by Certbot
    ssl_certificate_key /path/to/site/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}
server {
    if ($host = www.exampleSite1.com) {
        return 301 https://$host$request_uri;
    } # managed by Certbot

    if ($host = exampleSite1.com) {
        return 301 https://$host$request_uri;
    } # managed by Certbot

    listen [::]:80;
    server_name [Pv6:address:1] exampleSite1.com www.exampleSite1.com;
    return 404; # managed by Certbot
}

Nginx config for SECOND IPv6 site (can’t run certbot):

server {
    server_name [Pv6:address:2] exampleSite2.com www.exampleSite2.com;

    location = /favicon.ico { access_log off; log_not_found off; }
    location /static/ {
        root /path/to/SECOND/site;
    }

    location / {
        include proxy_params;
        proxy_pass http://unix:/run/exampleSite2.sock;
    }
}

I hope this all helps. If any more information is needed please let me know.