Setting up bridge mode isn't working correctly

Symptoms

• Personal router still shows a private IP address on its WAN side instead of a public one after enabling bridge mode
• Internet stops working entirely right after switching to bridge mode
• Some devices lose connectivity after the change
• Port forwarding or gaming issues persist despite enabling bridge mode

Likely causes

• CommonBridge mode setting not fully applied or requiring a restartMany gateway devices need a restart, sometimes of both the gateway and the downstream router, before bridge mode fully takes effect.
• CommonDownstream router's WAN connection type not set correctly after enabling bridge modeOnce in bridge mode, your own router needs to be set to get its own public IP via DHCP or PPPoE, matching what the modem now passes through directly.
• PossibleGateway's bridge mode implementation is limited or requires ISP assistanceSome ISP gateways need the provider to remotely confirm or enable full bridge mode support on their end.
• PossibleOnly one device can hold the public IP at a time, and both are still trying to routeIf bridge mode didn't fully disable the first device's routing function, you can end up with an unintended double NAT still in place.

What to do

1. Confirm bridge mode is available and correctly enabled in the gateway's settings, following the manufacturer's or ISP's specific instructions.
2. Restart the ISP gateway/modem after enabling bridge mode, then restart your personal router.
3. On your personal router's WAN/internet settings, set the connection type to match what your ISP requires now that the gateway is bridged (commonly DHCP, but check if PPPoE credentials are now needed on your own router).
4. Check your personal router's WAN IP address in its status page; after successful bridge mode, it should show a public IP address rather than a private one (like 192.168.x.x).
5. If the WAN IP is still private, the gateway may not have fully entered bridge mode, and a call to your ISP to confirm remote settings may be needed.
6. Verify internet access and test any port forwarding or gaming issues that motivated the bridge mode change in the first place.
7. If problems continue, some ISPs require them to remotely enable full bridge mode support on the gateway, which is worth explicitly requesting when you call.

Tools and parts

• Access to both the ISP gateway and personal router's admin pages

When to call a pro

If your personal router still shows a private WAN IP after enabling bridge mode and following the setup steps, contact your ISP and specifically ask them to confirm and remotely enable bridge mode on your gateway.

Safety