Error on fresh install: [::]:80 failed (97: Address family not supported by protocol)

[IronTooch]

So this error occurs on a fresh install. Ubuntu Server 24.04 LTS. The install appears to go well, but then the webpage is unavailable when the install is complete. Looking at docker ps, it turned out that the nginx container was in a constant restart cycle. Looking at the docker logs for the nginx container, the following error shows up:

[emerg] 1#1: socket() [::]:80 failed (97: Address family not supported by protocol)

Turns out this is related to having IPv6 disabled on the server. This line in the nginx.conf throws up.

The quick and dirty fix at the moment is to go to the conf.d folder, and change the config. In Ubuntu, that's /home/labca/nginx_data/conf.d/labca.conf, and make the following changes:

server {
    listen 80 default_server;
#    listen [::]:80 default_server ipv6only=off;

...

server {
    listen 443 default_server ssl;
#    listen [::]:443 default_server ssl ipv6only=on;

Once that's done, a simple service docker restart and the container comes up. Wanted to put this here for any home-labbers who have IPv6 disabled for whatever reason.