It narrows the test but still includes endpoint and browser behavior.
IPV6 CONNECTIVITY
IPv6 Not Working: Check Reachability Before Changing Settings
Distinguish an IPv6 address from usable connectivity and compare devices, destinations and access modes with a controlled checklist.
An IPv6 address does not by itself establish usable IPv6 internet access. Check an IPv6-only destination, compare another device and record whether IPv4 still works. Router advertisements, routing, resolver answers and provider support can produce different failure patterns.
How to run the check
- Record the reported resultKeep the endpoint and whether the check actually completed. An unsupported browser method or blocked endpoint is not proof that the ISP has no IPv6.
- Compare another deviceUse another device on the same network, then another network if available. Keep VPN and proxy state recorded rather than silently changing it.
- Check the name’s AAAA answerA hostname needs the relevant DNS configuration as well as routing. A server-side AAAA lookup is a reference, not proof of the client’s own DNS response.Open the relevant tool →
- Consult router and ISP guidanceConfirm advertised IPv6 support and the router’s supported settings. Preserve existing configuration; do not disable firewalls as a diagnostic shortcut.
What the signals mean
Inspect that device’s software and configured network path before changing the entire home network.
A published address does not ensure it is reachable from this network.
Frequently asked questions
Should I disable IPv6?
First identify a reproducible problem and consult official device and provider guidance. A blanket change can hide the symptom without identifying its cause.
Can a VPN change my IPv6 result?
Yes. Tunnel support and routing can differ. Record the tunnel state and compare only when the change is permitted for your device.