Many VPNs tunnel IPv4 only. If your network has IPv6, your device might send IPv6 traffic outside the VPN — that is an IPv6 leak. Test with our IPv6 leak tool.
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Why IPv6 Leaks
VPN may not route IPv6 through the tunnel. Traffic goes out the normal interface.
How to Test
Connect to VPN and run our IPv6 leak test. All IPv6 should be blocked or routed through VPN.
Conclusion
Test for IPv6 leaks. Use a VPN that blocks or tunnels IPv6.
Related Resources
Frequently Asked Questions
When IPv6 traffic bypasses the VPN and exposes your real IPv6 address.
KloxVPN Team
Experts in VPN infrastructure, network security, and online privacy. The KloxVPN team has been building and operating VPN services since 2019, providing consumer and white-label VPN solutions to thousands of users worldwide.