## Introduction to Xiaomi Home Assistant
The Xiaomi Home Assistant is a smart home system that integrates various Xiaomi devices, allowing users to control and monitor their home appliances remotely. However, some users have reported connection issues when using IPv6 networks, resulting in certificate problems and failure to connect to the Xiaomi server.

## Symptoms of the Issue
The issue manifests as a failure to connect to the Xiaomi server, with the interface continually loading without any error messages. The system logs reveal a certificate problem, specifically an invalid COMMON_NAME error.

## Steps to Reproduce the Issue
To reproduce the issue, follow these steps:
1. Set up a Home Assistant system using the latest version (2025.7.1) on an IPv6 network.
2. Install the Xiaomi Home Assistant integration (v0.4.2) and configure it to connect to the Xiaomi server.
3. Run the Home Assistant system using the `docker run` command with the `--network=host` option.

## Expected Behavior
The expected behavior is for the Xiaomi Home Assistant to connect successfully to the Xiaomi server, allowing users to control and monitor their devices. However, due to the certificate issue, the connection fails, and the interface does not display any error messages.

## Troubleshooting the Issue
To troubleshoot the issue, check the system logs for any error messages related to the certificate problem. Verify that the COMMON_NAME in the certificate is correct and matches the domain name of the Xiaomi server. Additionally, ensure that the IPv6 network configuration is correct and that the Home Assistant system is properly set up to use IPv6.

## Conclusion
The connection issue with the Xiaomi Home Assistant on IPv6 networks is a known problem that can be resolved by troubleshooting the certificate configuration and ensuring that the IPv6 network setup is correct. By following the steps outlined in this article, users can resolve the issue and enjoy a seamless smart home experience with their Xiaomi devices.