# Starlink + UniFi + Homey Pro: How to Enable Direct Connection via IPv6 (Bypassing CGNAT)

**URL:** <https://community.homey.app/t/starlink-unifi-homey-pro-how-to-enable-direct-connection-via-ipv6-bypassing-cgnat/147192>\
**Category:** Tutorials\
**Tags:** featurerequest, homey-pro-2023\
**Created:** [December 18, 2025, 2:19am UTC](https://community.homey.app/t/starlink-unifi-homey-pro-how-to-enable-direct-connection-via-ipv6-bypassing-cgnat/147192 "2025-12-18T02:19:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Guray\_Kircuvaloglu](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/guray_kircuvaloglu/32/79277_2.png) [@Guray\_Kircuvaloglu](https://community.homey.app/u/Guray_Kircuvaloglu)\
**Post date:** [December 18, 2025, 2:19am UTC](https://community.homey.app/t/starlink-unifi-homey-pro-how-to-enable-direct-connection-via-ipv6-bypassing-cgnat/147192/1 "2025-12-18T02:19:52Z")

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Hi everyone,

I wanted to share a successful setup for establishing a **Direct Connection** to Homey Pro (2023) while using **Starlink** , which is notorious for using CGNAT (Carrier-Grade NAT) on IPv4.

As many of you know, Port Forwarding on IPv4 is impossible with Starlink because we don’t have a public IP address. This usually forces Homey to fall back to the slower “Cloud Relay” connection.

However, I managed to get a fully working Direct Connection using **IPv6** with a UniFi UDM SE. Here is how I did it, and a note for the Homey developers regarding the “Port Forwarding” UI.

### My Setup

- **ISP:** Starlink (Residential, Gen 2)

- **Router:** UniFi UDM SE (OS 3.x, Network 8.x)

- **Device:** Homey Pro 2023

### Step 1: Enabling IPv6 on Starlink & UniFi

First, we need to get a valid IPv6 address since IPv4 is behind CGNAT.

1. **UniFi Internet Settings (WAN):**

2. **UniFi Network Settings (LAN):**

_Result:_ My Homey Pro received a valid global IPv6 address (starting with `2a0d:...`).

### Step 2: Opening the Firewall (The “New” Port Forwarding)

Since there is no NAT in IPv6, we don’t use traditional “Port Forwarding.” Instead, we need to open the Firewall to allow traffic directly to Homey.

**In UniFi Network \> Security \> Traffic Rules:**

- **Action:** Allow

- **Category:** Internet

- **Traffic Direction:** Traffic Coming **FROM** Internet (Source: External/Any)

- **Destination:** Homey Pro (or its specific IPv6 Address)

- **Port:** 443

- **Protocol:** TCP

### Step 3: Verification (The Important Part)

After applying these settings, I tested the connection using an external IPv6 Port Checker (like `port.tools`).

- **Target:** Homey’s Global IPv6 Address

- **Port:** 443

- **Result:**  **OPEN / SUCCESS** ✅

I verified this by turning off Wi-Fi on my phone (using 4G/5G). The Homey App connects instantly, confirming a Direct Connection.

* * *

### ⚠ A Note to Homey Developers / Feature Request

This is the tricky part that confuses users. Even though my Direct Connection works perfectly via IPv6:

1. I went to **Homey App \> Settings \> Port Forwarding**.

2. I enabled it and entered port **443**.

3. The app threw an error: **“Not Working. Homey Pro couldn’t be reached…”**

**The Reason:** The Homey App seems to only check the **IPv4** address (which is `192.168.1.x` internally and `100.x.x.x`externally via CGNAT). It does not seem to validate or recognize that the **IPv6** path is actually open and working.

**My Request:** Could you please update the Port Forwarding settings page to support and validate **IPv6** addresses? Currently, we have to ignore the “Error” message and the red toggle in the app, even though the system is working perfectly. Adding native IPv6 support to this UI would be a game-changer for Starlink and Fiber users worldwide.

Hope this guide helps anyone struggling with Starlink and remote access!