Режим TUN Overview
режим TUN is an advanced proxy feature in ClashX that captures system-level сеть трафик by creating a virtual сеть interface. Compared to traditional system режим прокси, режим TUN can proxy more types of applications.
режим TUN has multiple significant advantages:
режим TUN requires macOS 10.15 or higher. Some older systems may have compatibility issues.
Common Error Types
Error 1: Permission Denied
This is the most common reason for режим TUN startup failure. Error messages typically display as:
Typical Error Messages
"Failed to start TUN: Permission denied"
"Cannot create TUN device: Permission denied"
Root Cause Analysis:режим TUN requires administrator privileges to create virtual сеть interfaces and modify system routing tables.
Quick Diagnosis
First perform these basic checks:
"Address already in use" or "Port xxxx is already in use"
Error 3: Сеть Driver Conflict
Сеть drivers from some VPN or security software may conflict with ClashX's TUN interface.
- Other VPN applications (e.g., OpenVPN, WireGuard)
- Сеть monitoring tools (e.g., Little Snitch, Lulu)
- Virtualization software (VMware, Parallels)
- Сеть protection features of antivirus software
Permission Issues
Grant Administrator Permissions
режим TUN requires administrator privileges. If you see permission errors:
- Completely quit ClashX (right-click строка меню icon > Quit)
- Open "Applications" folder and find ClashX
- Right-click ClashX.app > Get Info
- Click the lock icon at bottom left and enter administrator пароль
- In "Sharing & Permissions", ensure your user account has "Read & Write" permissions
- Restart ClashX
Using Терминал to Grant Permissions
Alternatively, use Терминал commands:
Терминал Commands
sudo chown -R $(whoami):admin /Applications/ClashX.appsudo chmod -R 755 /Applications/ClashX.appIn macOS Monterey and later, the system will show a permission request dialog when first enabling режим TUN. Be sure to click "Allow".
System Security Settings
This command will add ClashX to allowed applications list.
- Restart Mac and hold Command + R to enter Recovery Mode
- Open "Utilities" > "Терминал"
- Enter
csrutil statusto check SIP status - If SIP is too restrictive, consider adjusting related settings (proceed with caution)
After modifying permissions, you must completely restart ClashX for changes to take effect. Use Command+Q or menu → Quit.
System Conflict Resolution
Identify Port Conflicts
Use the following commands to check port occupancy:
Check Port Usage
sudo lsof -i :53sudo lsof -i :7890sudo lsof -i :7891Use Терминал to check if TUN interface was created successfully:
| Решение | Difficulty | Recommendation |
|---|---|---|
| Modify ClashX port configuration | Легко | ⭐⭐⭐⭐⭐ |
| Stop the app occupying the port | Средне | ⭐⭐⭐⭐ |
| Force terminate conflicting process | Средне | ⭐⭐⭐ |
Check Сеть Interfaces
If utun device appears in the output, TUN interface was created successfully.
- Don't run multiple VPNs simultaneously: This will cause routing table confusion
- Priority Settings: Ensure ClashX сеть interface has highest priority
- Consider Alternatives: Use ClashX Расширенный режим instead of режим TUN
Настройка DNS
режим TUN requires proper DNS configuration:
Go to "System Preferences" > "Security & Конфиденциальность" > "Брандмауэр" > "Брандмауэр Options", ensure ClashX is allowed to accept incoming connections.
Advanced Troubleshooting
View System Logs
ClashX detailed logs can help diagnose the root cause of problems:
- Click ClashX menu icon > Help > Show Logs
- Look for lines containing "TUN" or "error"
- Record error codes and timestamps
Reset Сеть Configuration
If the problem persists, try resetting ClashX сеть configuration:
Reset Steps
- Quit ClashX
- Delete файл конфигурации:
~/.config/clash/ - Restart ClashX and import configuration
Update ClashX Version
Older versions of ClashX may have known режим TUN bugs:
- Visit GitHub Releases page to check latest version
- Check changelog for TUN-related fixes
- Download and install latest version
Before updating, it рекомендуется to backup your файл конфигурацииs and custom rules to avoid data loss.
macOS System Update Impact
Some macOS system updates may affect how сеть extensions work:
| macOS Version | TUN Compatibility | Notes |
|---|---|---|
| macOS 15 Sequoia | Отлично | Requires latest version of ClashX |
| macOS 14 Sonoma | Хорошо | Fully supported |
| macOS 13 Ventura | Хорошо | Стабильный support |
| macOS 12 Monterey | Удовлетворительно | Requires additional permission configuration |
现场诊断案例：TUN 卡在“正在连接”
以下信息来自 2026 年 1 月 12 日对 macOS 14.2 的真实排障记录，可对照检查自己的系统状态：
| 诊断步骤 | 命令/操作 | 期望结果 |
|---|---|---|
| 检查 Network Extension | log show --predicate 'process == "ClashX"' --last 30m | grep -i tun |
日志中应返回 TUN interface created，若出现 posix_spawn 错误说明权限不足。 |
| 验证虚拟网卡 | ifconfig utun0 |
接口应存在并包含 IPv4/IPv6 地址；若提示 interface not found，说明 TUN 未被系统创建。 |
| 检测 DNS 冲突 | scutil --dns | grep 'nameserver \\[0\\]' |
nameserver 应指向 ClashX 内置 198.18.0.1；若仍是原 ISP，则说明系统代理未被接管。 |
| 测速验证 | networkQuality -v |
排障后上/下行延迟恢复至 60ms/20ms 内，说明流量已回到代理链路。 |
如果以上任一步骤失败，建议记录命令输出与 ClashX 日志，在 GitHub Issues 中附上 ~/Library/Logs/com.west2online.ClashX.log 片段，方便开发者重现问题。
Prevention Measures and Лучшие практики
Correct Startup Sequence
If режим TUN cannot be enabled, try Расширенный режим:
System Proxy Mode
Traditional system режим прокси is also effective:
- Weekly подписка updates: Keep node configuration up-to-date
- Monthly update checks: Upgrade ClashX version timely
- Clean log files: Avoid excessive disk space usage
- Backup файл конфигурацииs: Prevent accidental data loss
Complete Reset
If all else fails, try complete reset:
Расширенный режим: Similar functionality to TUN but better compatibility
System Proxy Mode: Works for most daily scenarios
Rule Mode + Manual Configuration: Set proxy for specific apps
Seek Help
Still can't solve the problem? Try these resources:
- GitHub Issues: Submit detailed error reports
- Community Forum: Exchange experiences with other users
- Telegram Group: Get в реальном времени technical support
- Official Documentation: Consult latest troubleshooting guides
Итоги
режим TUN is powerful but relatively complex. Most issues are related to permission configuration, port conflicts, or software conflicts. Follow this guide step by step and you should be able to enable режим TUN successfully. Remember, the community is always ready to help if you encounter difficulties!
