Software & Applications
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  • 21/08/2024

How to Disable IPv6 on Firefox

To disable IPv6 in Firefox, follow these steps:

  1. Open Firefox: Launch the Firefox browser.

  2. Access Advanced Configuration:

    • Type about:config in the address bar and press Enter.

  3. Accept the Warning: If you see a warning message ("Proceed with Caution"), click the button to proceed.

  4. Search for IPv6 Settings:

    • In the search bar at the top of the page, type network.dns.disableIPv6.

  5. Toggle IPv6 Off:

    • Double-click the network.dns.disableIPv6 entry, or click the toggle button on the right, to change its value to true.

  6. Restart Firefox: Close and restart Firefox for the changes to take effect.

Once this is done, Firefox will no longer use IPv6 for DNS resolution and will rely solely on IPv4.

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