In the evolving landscape of network security and privacy, Clash Verge Rev has emerged as the premier GUI for Clash Meta (Mihomo) cores. While standard "System Proxy" settings work for web browsers, many applications—such as command-line tools, UWP apps, and online games—often bypass these settings. This is where TUN Mode becomes indispensable. By creating a virtual network interface, TUN Mode intercepts all traffic at the IP layer, ensuring truly system-wide proxy coverage. In this guide, we will explore the technical nuances and step-by-step procedures to master TUN Mode on Windows in 2026.

Understanding Why You Need TUN Mode

Traditional proxying relies on the HTTP_PROXY or SOCKS5 protocols. Unfortunately, many modern software architectures are "proxy-unaware." For instance, a Git clone operation in your terminal or a high-intensity multiplayer game typically communicates via UDP or raw TCP packets that ignore the Windows System Proxy toggle. TUN Mode solves this by simulating a physical network card. When active, your operating system treats the Clash core as the gateway for all outgoing packets.

Pro Tip: TUN Mode is highly recommended for developers who frequently use WSL2, Docker, or Node.js, as it eliminates the need to manually configure proxy environment variables in every shell session.

Prerequisites and Driver Installation

Before toggling the switch, Clash Verge Rev requires specific low-level drivers to interact with the Windows network stack. In 2026, the two primary drivers used are WinTun and Mihomo's built-in stack.

Step 1: Install the Kernel Driver

  1. Open Clash Verge Rev and navigate to the Settings tab on the left sidebar.
  2. Locate the Clash Core section. Ensure you are using the Mihomo (formerly Clash Meta) core, as it offers the best TUN implementation.
  3. Find the Service Mode option. Click on the Install button next to "Service Mode Management." This grants the application the administrative privileges required to manage network interfaces.
  4. Once the service is installed successfully, the icon should turn green, indicating "Active."
Warning: Always run Clash Verge Rev as an Administrator when installing drivers or enabling TUN Mode for the first time, otherwise, the virtual network interface creation will fail.

Configuring the TUN Mode Parameters

Simply turning it on isn't enough for an optimized experience. You need to configure how the traffic is handled. Navigate to Settings > TUN Settings. Here are the recommended configurations for 2026:

  • Stack: Select system or gvisor. The system stack generally offers better performance on modern Windows 11 builds, while gvisor provides better compatibility for complex packet handling.
  • Auto Route: Must be enabled. This allows Clash to automatically modify the system routing table.
  • Auto Detect Interface: Enabled. This ensures Clash stays active even when you switch between Wi-Fi and Ethernet.
  • DNS Hijacking: Enabled. This is crucial to prevent DNS leaks that could expose your browsing history to your ISP.

Recommended YAML Configuration for TUN

While the Verge GUI handles most settings, ensuring your configuration file (YAML) has the correct tun block is vital for advanced users. Below is a standard template for the Mihomo core:

TUN Configuration Template
tun:
  enable: true
  stack: system
  device: utun
  auto-route: true
  auto-detect-interface: true
  dns-hijack:
    - "any:53"
    - "tcp://any:53"
  strict-route: true
  mtu: 1500

Troubleshooting Common TUN Mode Issues

Even with the best tools, Windows network configurations can be finicky. If you find that your internet connection drops entirely after enabling TUN Mode, check the following:

1. DNS Conflict

If web pages won't load but pings to IP addresses work, you have a DNS issue. Ensure that "Fake-IP" mode is correctly configured in your DNS settings within Clash Verge Rev. Using fake-ip is generally more stable for TUN Mode than redir-host.

2. Routing Loops

A routing loop occurs when Clash tries to proxy its own connection to the proxy server. Ensure Auto Detect Interface is on, or manually exclude your proxy server's IP address from the TUN interface in the skip-proxy or bypass settings.

3. Driver Conflicts

If you have previously used other VPNs or tools like WireGuard, their drivers might conflict with WinTun. Go to Device Manager > Network Adapters and uninstall any unused virtual adapters (like "WinTun Userspace Tunnel").

Issue Possible Cause Solution
No Internet Driver not installed Reinstall Service Mode
DNS Leak Hijack not active Enable "DNS Hijacking" in settings
UWP Apps Fail Loopback restriction Use the "UWP Loopback" tool in Verge

Advanced Features: Strict Route and Bypass

For users who demand the highest level of privacy, strict-route: true is a game-changer. It forces all traffic through the TUN interface and prevents any packets from "leaking" through the default gateway, even if the proxy connection drops. However, be aware that this can make local network discovery (like printers or NAS) more difficult unless you properly configure the bypass list.

In the Bypass section of the TUN settings, you should typically include your local IP ranges to ensure your LAN remains accessible:

  • 192.168.0.0/16
  • 10.0.0.0/8
  • 127.0.0.0/8
  • 172.16.0.0/12

Conclusion

Enabling TUN Mode in Clash Verge Rev transforms your Windows machine into a truly global-ready workstation. By following this 2026 guide, you ensure that every packet—whether from a game, a terminal, or a system update—respects your privacy and routing rules. Remember to keep your Mihomo core updated and periodically check your Service Mode status to maintain a seamless experience.