What Is IPv6?
IPv6 (Internet Protocol version 6) was developed to replace IPv4 and solve the address exhaustion problem. Using 128-bit addresses (e.g., 2001:0db8:85a3::8a2e:0370:7334), IPv6 provides approximately 340 undecillion (3.4 x 10^38) unique addresses.
While IPv6 adoption is growing (reaching roughly 40%% of Google's traffic), the dual-stack transition period creates significant privacy challenges for VPN users.
IPv6 Privacy Risks
IPv6 poses unique privacy threats. Many IPv6 addresses are derived from the device's MAC address (SLAAC), creating a persistent identifier. Since every device can have its own public IPv6 address (no NAT needed), tracking becomes easier. The most critical risk is IPv6 leaks — if your VPN only tunnels IPv4, IPv6 requests can bypass the tunnel entirely.
How VPNWG Handles IPv6
VPNWG protects against IPv6 leaks by routing both IPv4 and IPv6 traffic through the encrypted tunnel. The AllowedIPs configuration includes both 0.0.0.0/0 and ::/0, ensuring complete traffic capture. If IPv6 is not available on the VPN server, VPNWG blocks IPv6 at the system level. Check your IP for leaks.