---
title: "Disable Teredo, ISATAP and 6to4: the IPv6 transition tunnels in Windows"
description: "Teredo, ISATAP and 6to4 are tunnels that carry IPv6 over an IPv4 network. What the tweak changes, when it helps, when it hurts and how to undo it."
url: https://frozentweaks.com/tweaks/disable-teredo-isatap-6to4
author: Frost LIVE, Founder of Frozen Tweaks
published: 2026-10-08
updated: 2026-10-08
category: "Network"
source: Frozen Tweaks (https://frozentweaks.com)
---

# Disable Teredo, ISATAP and 6to4: the IPv6 transition tunnels in Windows

**Short answer:** Teredo, ISATAP and 6to4 are tunnels that carry IPv6 over an IPv4 network. They date from the early days of IPv6. This tweak sets all three to disabled with netsh. It runs cmd /c netsh interface teredo set state disabled and 2 more commands.

## In the app

- Switch: Disable IPv6 Transition Tunnels (Network, Pro, Advanced)
- Undo: Yes. Switching it off sets a standard Windows value, which may not be exactly how you had it.
- Catalog row: https://frozentweaks.com/tweaks#t-1093

## What it does

Teredo, ISATAP and 6to4 are tunnels that carry IPv6 over an IPv4 network. They date from the early days of IPv6. This tweak sets all three to disabled with netsh.

In the app the switch is called "Disable IPv6 Transition Tunnels", described there as: Disables Teredo/ISATAP/6to4 which can add background routing noise.

## When it helps

- Removing tunnel adapters that nothing on a modern network needs, along with their background traffic.

## When it hurts

- Xbox networking on Windows uses Teredo for party chat and multiplayer on some connections. If the Xbox app reports a blocked Teredo or strict NAT, switch this off.

## What it writes

Read from the app's source. "Switching it off" is what the app writes when you turn the tweak off again.

Commands the tweak runs:

```bat
cmd /c netsh interface teredo set state disabled
cmd /c netsh interface isatap set state disabled
cmd /c netsh interface 6to4 set state disabled
```

Switching it off runs:

```bat
cmd /c netsh interface teredo set state default
cmd /c netsh interface isatap set state default
cmd /c netsh interface 6to4 set state default
```

Source: Tweaks/ipv6_transition_off.hpp in the app's source, app 2.0.0, checked 2026-10-08.

## How to undo it

Switch the tweak off in Frozen Tweaks. It runs the commands shown under "Switching it off".

## Verdict

Safe for most PCs. Skip it if you use Xbox party chat or Game Pass multiplayer.

## Questions

### What does the "Disable IPv6 Transition Tunnels" tweak change in Windows?

It runs cmd /c netsh interface teredo set state disabled and 2 more commands. The full list is in the table on this page, read from the app's source.

### Is "Disable IPv6 Transition Tunnels" safe to switch on?

Safe for most PCs. Skip it if you use Xbox party chat or Game Pass multiplayer. The main cost: Xbox networking on Windows uses Teredo for party chat and multiplayer on some connections. If the Xbox app reports a blocked Teredo or strict NAT, switch this off.

### How do I undo it?

Switch the tweak off in Frozen Tweaks. Switching it off sets a standard Windows value, which may not be exactly how you had it.

### Is "Disable IPv6 Transition Tunnels" free in Frozen Tweaks?

It is part of Frozen Pro and Elite. You can also make the change by hand with the values on this page.

## Related guides

- [How to Reduce Input Lag on PC: The Whole Latency Chain](https://frozentweaks.com/guides/reduce-input-lag)
- [Windows 11 Gaming Optimization: What Still Works in 2026](https://frozentweaks.com/guides/windows-11-gaming-optimization)

## More tweak explainers

- [Windows Connect Now (wcncsvc)](https://frozentweaks.com/tweaks/disable-windows-connect-now)
- [Wi-Fi Direct Services](https://frozentweaks.com/tweaks/disable-wifi-direct-services)
- [Peer networking services (PNRP)](https://frozentweaks.com/tweaks/disable-peer-networking-services)

---
Written by Frost LIVE, founder of Frozen Tweaks. Canonical version: https://frozentweaks.com/tweaks/disable-teredo-isatap-6to4