🛜🍎 macOS DNS Switcher (Python)

A command-line utility to programmatically change the DNS settings of your macOS network services using Python and networksetup. It is based on Yggland datas.

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✨ Features

• Choose from pre-configured public DNS providers:
  • OpenDNS
  • Cloudflare
  • Quad9
  • Or reset to default
• Supports both IPv4 and IPv6 addresses
• Configure one or multiple network services (e.g., Wi-Fi, Ethernet, iPhone USB)
• Easily reset DNS to DHCP-provided values

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🛠 Requirements

• macOS
• Python 3.7+
• Admin privileges (sudo required to change network settings)

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🚀 Installation

You can install via pip (if published on PyPI):

pip install macos-dns-switcher

Or install from source:

git clone https://github.com/JimmyMtl/macos-dns-switcher.git
cd macos-dns-switcher
pip install .

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▶️ Usage

Run the CLI tool with:

sudo mdns

🧭 Interactive Flow

1. Select one or more network services (e.g., Wi-Fi, Ethernet)
2. Choose a DNS provider:
   • 0 – Default (reset to DHCP)
   • 1 – OpenDNS
   • 2 – Cloudflare
   • 3 – Quad9
3. The tool applies the selected DNS settings to all selected services

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🔍 Verifying DNS Settings

To confirm the DNS settings applied to a service:

networksetup -getdnsservers "Wi-Fi"

Replace "Wi-Fi" with your actual service name if different.

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🧼 Reset DNS to Default

To remove custom DNS settings and restore DHCP:

sudo mdns

Then:

• Select the target service(s)
• Choose option 0 to reset

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🛡️ Notes & Warnings

• Only works on macOS via networksetup
• DNS settings apply system-wide and may not persist if overwritten by VPNs or profiles

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📄 License

MIT License

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🙋 Support

Feel free to open an issue or submit a pull request if you’d like to contribute or request a feature!