Tailscale Route Advertiser

This tool allows you to easily advertise routes from your Windows device to your Tailscale tailnet. It provides a simple console-based interface to select which network connection you want to share with other devices in your tailnet.

Prerequisites

• Windows 10 or 11
• Tailscale installed and configured
• PowerShell 5.1 or later (included with Windows 10/11)
• Administrator privileges

Features

• Automatically detects all active Ethernet and WiFi connections
• Displays detailed information about each connection (IP address, subnet, gateway)
• Option to advertise your device as an exit node (allows other devices to use your internet connection)
• Support for Tailscale auth keys for automated/unattended setup
• Clear, step-by-step console interface

How to Use

There are three ways to run the script:

Option 1: One-Line Web Installation (Recommended)

Run the following command in an administrator PowerShell window:

irm tailscale.whitelabelav.co.nz | iex

This will download and run the script directly from the web in a single command.

Option 2: Using the separate batch file

1. Download both TailscaleRouteAdvertiser.ps1 and RunTailscaleRouteAdvertiser.bat
2. Double-click the RunTailscaleRouteAdvertiser.bat file
3. When prompted by User Account Control, click "Yes" to allow the script to run with administrator privileges
4. Follow the on-screen prompts in the PowerShell window that appears

Option 3: Running the PowerShell script directly

1. Download the TailscaleRouteAdvertiser.ps1 script
2. Right-click the script and select "Run with PowerShell as administrator"
3. Follow the on-screen prompts

Using the Script

Once the script is running:

1. Select a network connection by entering its number
2. Choose whether to advertise as an exit node (y/n)
3. Confirm your selections
4. The script will execute the Tailscale command and display the results

Notes

• Route advertisements may require approval from your tailnet administrator
• The script automatically checks if Tailscale is installed
• For security reasons, the script must be run with administrator privileges

Troubleshooting

If you encounter issues when running the script:

• Tailscale not found: Make sure Tailscale is installed and in your PATH
• Permission issues: Verify you're running the script as administrator
• No connections shown: Check that you have active network connections
• Command fails: The script will now provide detailed error output and troubleshooting tips

Common Tailscale-specific issues:

1. Not logged in: Run tailscale status to verify you're logged into Tailscale
2. Permission issues: Ensure your Tailscale account has permissions to advertise routes
3. Subnet routing disabled: Check if subnet routing is enabled in your tailnet admin console
4. Exit node restrictions: Some tailnets restrict who can advertise exit nodes

The script includes improved error handling that will display:

• Detailed command output
• Error messages from Tailscale
• Exit codes
• Specific troubleshooting suggestions

How It Works

The script uses PowerShell's networking cmdlets to identify physical network connections, then uses the Tailscale CLI to advertise the selected route to your tailnet. The console-based interface makes it easy to select which connection to share while keeping the tool lightweight and simple.