If your Orbi app is warning you about "double NAT," or you're seeing connection issues with online games or video calls that don't make sense given a fast internet plan, this is very likely the cause — and it's a genuinely quick fix once you understand what's actually happening.

What double NAT actually is

NAT (network address translation) is the process your router uses to share one internet connection across all your devices. Every router does this once. "Double NAT" happens when two routers on the same network are both doing this job at the same time — usually your ISP's modem/router combo, and then your Orbi on top of it. Each device on your network ends up a step further removed from the open internet than it should be, which can cause dropped connections, failed game invites, and inconsistent video call quality.

Why it happens with Orbi specifically

This isn't an Orbi-specific problem — it happens with any router added behind another router. It's just common with Orbi because a lot of people add it to replace weak wifi from an ISP-provided gateway (like a Fios or Xfinity box) without realizing that gateway is still acting as a router in the background, even though it's now mostly just passing the connection along.

How to check if you have it: open the Orbi app, go to network settings, and look for a network map or status screen. If it explicitly flags "double NAT detected," that confirms it. You can also check by comparing your public IP address as reported by your ISP gateway versus your Orbi — if they differ, you likely have it.

The fix: put your ISP gateway into bridge mode

The cleanest fix is to stop your ISP's gateway from acting as a router at all, and let your Orbi be the only device doing that job. This is called "bridge mode," and most ISPs support turning it on:

  1. Log into your ISP gateway's admin page (not the Orbi app) — usually at an address like 192.168.1.1, printed on the device itself.
  2. Look for a setting called "Bridge Mode," "IP Passthrough," or similar, usually under advanced or network settings.
  3. Enable it and save — the gateway will likely reboot.
  4. Once it's back online, your Orbi should automatically pick up a public IP address directly, resolving the double NAT.

Some ISPs (notably Fios) call this "MoCA bridge mode" or handle it slightly differently — if you can't find the setting, search for your specific ISP model number plus "bridge mode" to get exact steps, or ask your provider to enable it remotely.

Alternative: switch Orbi to access point mode

If your ISP doesn't support bridge mode, you have another option: switch the Orbi itself to access point (AP) mode instead. This makes the Orbi stop doing its own routing and simply extend the wifi from your existing gateway. It resolves the double NAT from the other direction, though you'll lose a few Orbi-specific router features like its own parental controls and guest network in the process — the ISP gateway becomes the "real" router again.

How to verify it's actually fixed

After making the change, go back to the Orbi app's network status screen. The double NAT warning should be gone, and your Orbi should show it's receiving a public-facing IP address directly rather than one from the ISP gateway's internal network.

Frequently asked questions

Does double NAT actually slow down my internet speed?

Not usually in a way you'd notice for everyday browsing or streaming — the bigger impact is on things that need a direct connection back to your device, like game hosting, some video calling features, and remote access tools.

Do I need to redo my whole Orbi setup after enabling bridge mode?

No — your Orbi wifi name, password, and satellite pairings stay intact. Only the gateway's own role on the network changes.

What if my ISP won't let me enable bridge mode?

Switch your Orbi to access point mode instead — it achieves a similar result without needing any changes on the ISP side.