can not connect my home-assistant

[jsdfhasuh]

Home Assistant Android app version(s): 2026.2.1

Android version(s): 16

Device model(s): Honor Magic 8

Home Assistant version: 2025.12.4 (Core) / Supervisor 2026.1.1 / OS 17.0

Description of problem:

When accessing Home Assistant through the Android app via external network (mobile data), the connection fails.

Network configuration:

• Direct connection via DDNS (no reverse proxy, no Nginx)
• IPv6 only: DDNS resolves to IPv6 address (AAAA record)
• URL format: http://[your-domain] or https://[your-domain] (direct IPv6)

Connectivity test results:

• ✅ Internal URL (WiFi/LAN): Working
• ✅ External URL via Mobile Browser: Working (Chrome loads the page)
• ❌ External URL via Home Assistant App: Fails to connect

Key observation: The app fails to connect via IPv6 on mobile data, while the browser on the same device connects successfully. This suggests the app's network stack (WebView/OkHttp) may have IPv6 connectivity issues or different handling compared to Chrome.

Error message: ``

Website not available
Website https://ha.example.com:8123/?external_auth=1 couldn't load.
net::ERR_NAME_NOT_RESOLVED

Companion App Logs:

homeassistant_companion_log_1-2-2026_11-33-11.txt

[jpelgrom]

DNS resolution is handled by the system, so it could be different from Chrome but it shouldn't be HA specific :)

Did work correctly with a previous version of the app or do you not know?

You're specifically mentioning IPv6, is there a reason for that (does it work with IPv4)?

The log file you added seems to be truncated. Maybe you can try adding it again.

[Mattrazol]

I have the same issue on my phone. After the latest update I cannot manage to get into my HA istance.

[jpelgrom]

I have the same issue on my phone. After the latest update I cannot manage to get into my HA istance.

Do you have exactly the same symptoms (error message net::ERR_NAME_NOT_RESOLVED, works fine in Chrome)? If not, please create a separate issue with more details so this one can stay focused.

[Mattrazol]

I open the app and I get just a screen that says "Please contact car services" 😅. My version is the minimal one

[jpelgrom]

I open the app and I get just a screen that says "Please contact car services"

That sounds like a different error so please create a new issue - including a screenshot if possible, I don't think that's an error message included in the app.

[jsdfhasuh]

IPv4

ipv4 I am in home use 192.168.* it is right.but my home don't have ipv4 address public。today I try 2025_6_6 version it can work

2025_6_6_homeassistant_companion_log_1-3-2026_8-39-26.txt

today I use version 2026_2_1,but it can not work .

2026_2_1_homeassistant_companion_log_1-3-2026_8-31-31.txt

how can I get it's log,I get log in companion -> debug -> show and share logs.