IPv6 routing problems in multiplayer games

Your multiplayer game lags, struggles to connect, or behaves differently when your VPN is on. IPv6 may be part of the connection, but a browser test cannot tell you which route the game server uses.

Use the VPN Leak Test to check whether IPv6 or WebRTC reveals your real IP while the VPN is connected. Then compare the game with the VPN on and off to see whether the VPN, your network, or the game connection is the more likely cause.

Check IPv6 and compare the game connection

1. Connect your VPN, then open the VPN Leak Test. It checks whether your real IP is exposed through IPv6 or WebRTC while the VPN is on. Avoid sharing your full IP address in public posts.
2. Write down the game region or server you use, the in-game ping, and what happens: for example, lag, failed matchmaking, or a disconnect. Keep these details the same when you compare sessions.
3. Play a short session with the VPN connected. If your VPN has split tunneling, check whether the game is included in or excluded from the VPN tunnel. The setting name and behavior vary by provider.
4. Disconnect the VPN and repeat the same game activity on the same region, if possible. Compare ping and connection behavior, not just whether one match feels smoother.

Try to compare sessions close together in time. Matchmaking may place you on a different server, and other people using your network can change ping or packet loss. Those differences can make a route comparison misleading.

What the result means

The test finds an IPv6 or WebRTC leak

The browser can reveal an address that does not match the VPN connection. This is a privacy concern, but it does not prove that your game uses the same route or that the leak caused lag. Games may use separate network connections, and a VPN may exclude them. Check the VPN app's leak protection and split tunneling settings. For more steps, see VPN leak detected? What to do next.

The test shows no leak

That is a useful result for browser traffic, but it does not certify every app's connection. It also does not show the route to the game server, the server's condition, or your ping inside the game. If the game still lags, compare the VPN and non-VPN sessions and check the game region.

The game works better with the VPN off

The VPN may be sending game traffic through a slower or busier route, or the VPN server may be far from the game server. Some VPNs also change how a game handles inbound connections or matchmaking. This comparison points to the VPN as a factor, but it does not identify a specific router or IPv6 fault.

The game behaves the same with the VPN on and off

The problem may be on the home network, at the game server, or elsewhere between you and the server. A leak result does not measure game latency. Check for a repeatable pattern, such as lag only on Wi-Fi, only at busy times, or only in one game region.

How to fix it

1. Choose a nearby game region. If the game lets you choose a region, select one close to your location and compare again. A distant region can add delay even when your internet speed is high.
2. Test without the VPN. If the game improves consistently with the VPN off, try a VPN server nearer to the game region. If available, compare another VPN protocol or server, changing one setting at a time. Do not assume that a leak test result means you need to disable IPv6.
3. Check split tunneling. Look in the VPN app to see whether the game is routed through the VPN or bypasses it. Test both options only if the VPN offers them, and follow the provider's instructions. The browser's leak result cannot confirm how the game itself is routed.
4. Check whether your connection reports IPv6. On Windows 11, open Settings › Network & internet › Wi-Fi, select your connected network, then review its properties. For a wired connection, open Settings › Network & internet › Ethernet. On macOS, open System Settings › Network, select your active connection, choose Details, then open TCP/IP. The wording and details can vary by version and network type.
5. Compare Wi-Fi with Ethernet. If you can, connect the gaming computer to the router with an Ethernet cable and test the same game again. A steadier wired connection helps separate a wireless problem from a routing or game-server problem.
6. Restart network equipment and retest. Restart the router and modem using the manufacturer's instructions, then repeat the comparison. If only one game or region still fails, check the game's connection status or contact its support team. If several games have the same issue, ask your ISP about routing or IPv6 connectivity.

Do not turn off IPv6 across your computer or router as a permanent fix based only on a browser leak result. That can disrupt other services and may hide the actual cause. If support asks you to test an IPv6 setting, note the original setting so you can restore it.

What IPv6 routing can and cannot tell you

IPv6 is a way for devices to address each other on the internet. A route is the series of network connections traffic follows to reach a destination. Your internet provider, VPN provider, and game network can each affect that route. Having IPv6 enabled does not automatically make a connection faster or slower.

The VPN Leak Test checks whether a browser can expose your real IP through IPv6 or WebRTC while a VPN is active. It is not a route tracer, does not test the game server, and cannot determine whether game packets use IPv4 or IPv6. Treat it as one privacy check, then use a controlled game comparison to narrow down performance problems.

When contacting support, share the game region, approximate test time, whether the VPN was on, and the ping or symptoms you observed. Send IP details only through a trusted support channel when they are specifically needed.