IPv6 connectivity issues with nginx

Thank you very much @jtittle, with your instructions. Which I judiciously followed I was able to resolve this issue. I wish I could give you more than 1 like on this Q&A thread. :D. I knew I made the right decision choosing DO!!

First off great job @jtittle, I really appreciate your consistency and care at handling this issue for @roshanbaliga . I am currently facing the same issue. So I’ve gone through the tutorial on https://www.digitalocean.com/community/tutorials/how-to-enable-ipv6-for-digitalocean-droplets#enabling-ipv6-on-an-existing-droplet But I’m stuck here where I have to sudo nano /etc/network/interfacesand add a section for my ipv6 address. Instead I get this file:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# Source interfaces
# Please check /etc/network/interfaces.d before changing this file
# as interfaces may have been defined in /etc/network/interfaces.d
# See LP: #1262951
source /etc/network/interfaces.d/*.cfg

I have gone through installing nginx and letsencrypt.

here is my nginx server settings:

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

    root /var/www/example.com/html;
    server_name example.com www.example.com;
    include snippets/ssl-example.com.conf;
    include snippets/ssl-params.conf;

   location ~ /.well-known {
            allow all;
   }
}

Thanks in advance.

@roshanbaliga

The only other issue that I can think of would be that NGINX may not be compiled with IPv6 support. Whether or not this is the case depends on the version of NGINX you’re running. The latest versions don’t require the compile option --with-ipv6, however, prior to the newer releases, older version of NGINX did.

You can check the compile options by running the following command from the CLI:

nginx -V

Which will detail every option that NGINX was compiled with for your build. If your version is 1.10.x or 1.11.x, you don’t need that compile option as it’s deprecated. If you’re build is older and it doesn’t show up when running the above, then your build of NGINX may not support IPv6 connections and that’d be why you’re unable to verify it.

The downside is that if you are running an older version and there’s not a newer version in the repo, then the best option is doing a source compile where you’ll have to define each option that NGINX should be compile with.

If that’s the route needed, I can help you there. I actually have a copy & paste solution to help with that, but before doing something like that, you’d need to backup any data in /etc/nginx that you don’t want destroyed (i.e. server block files for your website(s)) as we’d be deleting everything there and starting from scratch.