Role fails with check handler when installing on OS with IPv6 disabled

[ndjilinski]

Bug Overview

When the installation is happening on the OS with IPv6 disabled, the role stops on the config check handler:

`
RUNNING HANDLER [nginxinc.nginx : (Handler) Check NGINX] *********************************************************************************************
fatal: [host]: FAILED! => {"changed": false, "cmd": ["nginx", "-t"], "delta": "0:00:00.011838", "end": "2025-05-01 05:38:43.724383", "msg": "non-zero return code", "rc": 1, "start": "2025-05-01 05:38:43.712545", "stderr": "nginx: the configuration file /etc/nginx/nginx.conf syntax is ok\nnginx: [emerg] socket() [::]:80 failed (97: Address family not supported by protocol)\nnginx: configuration file /etc/nginx/nginx.conf test failed", "stderr_lines": ["nginx: the configuration file /etc/nginx/nginx.conf syntax is ok", "nginx: [emerg] socket() [::]:80 failed (97: Address family not supported by protocol)", "nginx: configuration file /etc/nginx/nginx.conf test failed"], "stdout": "", "stdout_lines": []}
...ignoring

RUNNING HANDLER [nginxinc.nginx : (Handler) Print NGINX error if syntax check fails] *****************************************************************
fatal: [host]: FAILED! => {
"config_check['stderr_lines']": [
"nginx: the configuration file /etc/nginx/nginx.conf syntax is ok",
"nginx: [emerg] socket() [::]:80 failed (97: Address family not supported by protocol)",
"nginx: configuration file /etc/nginx/nginx.conf test failed"
],
"failed_when_result": true
}
`

Expected Behavior

I understand the nginx.conf is coming with the package, but, the role - at least - should have the trigger to "disable" the check. The role already has the control over the service enablement and start. and the nginx_config can override the nginx.conf.

Steps to Reproduce the Bug

In the target host - disable IPv6 and call the playbook with included nginx role - using those vars:

nginx_manage_repo: false
nginx_install_from: os_repository
nginx_install_epel_release: false
nginx_start: false

Environment Details

• Target deployment platforms: Linux VM on VMware
• Target OSs: RHEL9 (IPv6 disable)
• Host OS (where you are running Ansible from): RHEL9
• Version of the NGINX Ansible role (or specific commit):
• Version of Ansible: 2.18.5
• How is Ansible being managed: CLI
• Version of Jinja2 (if you are using any templating capability): 3.1.6

Additional Context

No response