---
title: "Discussion on \"Xfinity Bridge Mode vs AT&T IP Passthrough (Fix Double NAT)\" | Hashnode"
description: "Discussion on \"Xfinity Bridge Mode vs AT&T IP Passthrough (Fix Double NAT)\". Fix double NAT behind an ISP gateway: how Xfinity Bridge Mode and AT&T IP Passthrough work, with step-by-step settings and a traceroute check."
url: "https://hashnode.com/posts/xfinity-bridge-mode-vs-att-ip-passthrough-double-nat/6aed7f67b76e03f6cdaceece"
---

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# [Xfinity Bridge Mode vs AT&T IP Passthrough (Fix Double NAT)](https://routeripguide.hashnode.dev/xfinity-bridge-mode-vs-att-ip-passthrough-double-nat?utm_source=hashnode&utm_medium=feed)

Fix double NAT behind an ISP gateway: how Xfinity Bridge Mode and AT&T IP Passthrough work, with step-by-step settings and a traceroute check.

5d ago · 4 min read · routeripguide.hashnode.dev  
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-   [#networking](https://hashnode.com/tag/networking)
-   [#wifi](https://hashnode.com/tag/wifi)

## Written by

[Nitin | RouterIPGuide](https://hashnode.com/@routeripguide)

@routeripguide

  
[View profile](https://hashnode.com/@routeripguide)

Documenting IPv4/IPv6 routing architecture, local gateway protocols, and subnet administration

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