IPv6 Leak
An IPv6 leak occurs when IPv6 traffic bypasses your VPN tunnel while IPv4 traffic is protected. This can expose your real network address and location e...
An IPv6 leak occurs when IPv6 traffic bypasses your VPN tunnel while IPv4 traffic is protected. This can expose your real network address and location even when the VPN appears connected. IPv6 leaks can happen if a VPN client doesn’t route IPv6 through the tunnel, if the OS uses IPv6 preferentially, or if split tunneling rules miss IPv6 routes. Modern VPN services handle this by supporting IPv6 in the tunnel or by safely disabling IPv6 to prevent bypass. The best approach depends on your environment: disabling IPv6 can be simpler, while full IPv6 tunneling preserves modern network functionality. To check for IPv6 leaks, run an IPv6 test while connected and verify the reported address belongs to the VPN exit rather than your ISP. If you use a VPN router, confirm the router’s firmware also handles IPv6 correctly - many consumer routers are inconsistent here.
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