Unable to reach the site on Ubuntu when ipv6 disabled

[Stephtheboss]

Description
Hi all,

I am working on Ubuntu 22.04.5 and i have a docker-magento 52.1.0 project which works well on it.
I am using a Magento 2.4.7-p8 on it.
For some reasons, i had to disabled ipv6 on my computer directly in GRUB.
Since this moment when i start docker-magento, the containers are started correctly but i can't access it on the web, for my project or phpmyadmin for example.
Do you have any idea why ?
Do i have to update some configs ?

When i do :
docker logs my-app-1
i have these messages :

/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: info: ipv6 not available
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
2025/12/11 16:01:43 [emerg] 1#1: socket() [::]:8443 failed (97: Address family not supported by protocol)
nginx: [emerg] socket() [::]:8443 failed (97: Address family not supported by protocol)

And on phpMyAdmin container i have this :

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

Don't hesitate if you have any questions

Steps To Reproduce

1. Get Ubuntu
2. Get Docker-magento 52.1.0
3. Setup the project to check that the site is working
4. Disable ipv6 :
   sudo nano /etc/default/grub
5. Replace
   GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
   by
   GRUB_CMDLINE_LINUX_DEFAULT="quiet splash ipv6.disable=1"
6. Update GRUB
   sudo update-grub
7. Reboot computer
8. Start Docker-magento

Expected Result
The website is working

Actual Result
The web page returns an error ERR_CONNECTION_REFUSED, and the phpMyAdmin page returns ERR_CONNECTION_RESET, ERR_EMPTY_RESPONSE and ERR_SOCKET_NOT_CONNECTED

[dosubot]

Hi @Stephtheboss! I'm Dosu and I’m helping the docker-magento team.

Disabling IPv6 on your host causes nginx and phpMyAdmin containers to fail because their configs try to bind to IPv6 addresses (e.g., listen [::]:8443 for nginx). When IPv6 is disabled, this results in errors like socket() [::]:8443 failed (97: Address family not supported by protocol) and the containers become inaccessible via the web [source].

To work around this, you need to edit the nginx config inside your docker-magento setup. Remove or comment out any lines with listen [::]:PORT (for example, listen [::]:8443 ssl http2 ipv6only=on;) so nginx only listens on IPv4. Then rebuild and restart your containers.

For phpMyAdmin, the container uses an upstream image that also tries to bind to IPv6. Since there’s no override in the docker-magento repo, you’d need to mount a custom nginx config into the phpMyAdmin container or use a different image that doesn’t bind to IPv6 by default.

Be aware that these changes may be overwritten by image updates, so you’ll need to reapply them after upgrades. This is a known edge case and not directly supported by the default configs [source].

To reply, just mention @dosu.

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