The Proton VPN Windows application blocks all IPv6 traffic by default. We recommend disabling the IPv6 if you are using a manual VPN connection, such as IKEv2 or OpenVPN.
1) Open Network and Internet Sharing center via the System tray at the bottom-right corner.
2) Select Change adapter options.
3) Right-click on the network adapter you are currently using and select Properties.
4) Uncheck Internet Protocol Version 6 (TCP/IPv6) and save the change.
That’s it! In order to check whether IPv6 is disabled on your computer, you can do an IPv6 leak test here.
Related articles:
How to disable IPv6 on macOS
How to disable IPv6 on Linux
Do I have to make a change somewhere in the VPN software for Windows to block IPV6 traffic?
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Hello Doug. No, IPv6 is blocked by our application and will not leak so there is no use of performing any other changes by yourself.
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