IPv6 by default not enabled

[imp1sh]

The default configuration only listens on 0.0.0.0 thus not serving IPv6 requests at all.
Please fix this bug.

[MatthewVance]

IPv6 is off by default on purpose. This is not something I have any plans to change. The image supports custom configurations for those who do not like the defaults.

MatthewVance/unbound-docker-rpi#12 (comment)

[imp1sh]

Would you care to explain why that is your default?

[MatthewVance]

I'm not trying to be difficult, but supporting this project is already more than I keep up with. Adding further complexity to the default configuration is not something I want to do. Docker with IPv6 is tricky, so I default it to off for broader compatibility. For instance, the Docker docs say "Before you can use IPv6 in Docker containers, you need to enable IPv6 support in the Docker daemon." I do not see a major issue with it not defaulting to listen on IPv6. The default still gracefully handles IPv6 resolution.

[imp1sh]

Docker and IPv6 is horrible, I know. That's why I use podman. It just works.
Normally when you listen to "::" instead of "0.0.0.0" it will lead to answering both v4 and v6 but I cannot test if it would lead to unbound using v6 as default for querying himself, which could lead to problems.
Maybe you can - when you happen to build a new container - swiftly check that.