From time to time, not always, getting DNS_PROBE_FINISHED_NXDOMAIN error in browser especially when visit Chinese AI sites e.g. https://chat.qwen.ai/ and https://chat.z.ai/
The root reason is because some ISPs have slower or inconsistent DNS resolution.
The fix is switching to a faster public resolver like Google (8.8.8.8/8.8.4.4) or Cloudflare (1.1.1.1/1.0.0.1) in network settings.
This is how to change DNS settings in OpenWRT.
