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Clash DNS

Clash DNS Leak Fix

Fix Clash DNS leaks by comparing rule mode and global mode, checking browser secure DNS, fake-IP behavior, provider rules, and resolver exposure.

Updated: 2026-05-11

Open DNS leak guide

Direct Answer

When Clash leaks DNS, separate node health from rule behavior. Test global mode first, then inspect DNS mode, browser secure DNS, and provider rules.

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Test global mode first

If global mode works but rule mode leaks, focus on rules, DNS mode, and domain matching.

Check browser DNS

Chrome, Edge, and Firefox secure DNS can override system or Clash DNS behavior.

Review Clash DNS mode

Fake-IP, redir-host, TUN, and system proxy modes can produce different resolver results.

Steps

  1. Switch to global mode and run DNS checks.
  2. Disable browser secure DNS for testing.
  3. Compare rule mode results.
  4. Adjust DNS mode or rules and retest.

Checklist

  • Global mode result is understood.
  • Browser secure DNS is not overriding Clash.
  • Rule providers are current.
  • DNS result does not show the original ISP.

Troubleshooting

Only rule mode leaks DNS

Review domain rules, DNS mode, and whether target domains bypass the proxy.

Chrome leaks but other apps do not

Disable Chrome secure DNS or configure it intentionally.

Fake-IP breaks some apps

Test redir-host or rule adjustments for the affected domains.

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Clash/V2Ray guide Setup and routing basics. Clash subscription Import and test V2Ray subscriptions. DNS leak test Check resolver exposure. WebRTC leak test Check browser-level exposure.

FAQ

Should I always use global mode?

No. Use it for diagnosis, then return to rule mode if your rules and DNS behavior are correct.

Can browser secure DNS bypass Clash?

Yes. Browser-level DNS settings can change resolver results.

Is DNS country mismatch always a leak?

Not always, but original ISP DNS exposure should be fixed.

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