Nginx not binding to ipv6 address using the Discourse Docker image

Installation
1

I am not sure if this is a bug or if I did something, I don’t think I did and I checked the templates and they are configured to listen on the ipv6 address. This has been happening since January 7 at 4:51 AM UTC according to our monitoring. IPv4 access is still okay.

Did I do something weird?

2

I’d say yes, as my test site on Digital Ocean is listening on IPv6 just fine.

3

That’s the weird part, I didn’t change anything. Did you configure or change Docker config files in any way?

4

No, plain old Digital Ocean install using the guide.

Is your droplet IPv6 enabled?

5

It WAS working and then stopped suddenly – so I’m confused as hell – lemme try and rebuild and report back.

Our Discourse instance is hosted on the (soon to be decomissioned) OpenStack Rackspace cloud platform.

6

I can’t seem to figure this out and it’s driving me nuts – rebuilding did nothing

7

Do the debugging steps.

Start another software listening to a free port on IPv6 and try to connect to it from elsewhere. Does it work?

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8

OpenSSH is listening on IPv6

9

You might try using nestat and lsof commands to see what (if anything) is officially listening on your 80/443 ports for ipv6. See How to check for open ports on Linux – Linux Hint for examples.

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