How to Disable IPv6 on macOS from the Terminal

You can disable IPv6 on macOS by running a few commands in the Terminal app.

1. Open the Apps icon in the Dock, then search for "Terminal" and open it.
2. Run the command below to list your network services, then enter your Mac administrator password when prompted. The list shows your services, usually including Wi-Fi, and an asterisk (*) next to a name means that a service is disabled.

sudo networksetup -listallnetworkservices

3. Run the following command to disable IPv6 on the service you're connected through. Replace "Wi-Fi" with your service name if it's different, exactly as it appears in the list, and put it in quotation marks if the name contains spaces:

sudo networksetup -setv6off Wi-Fi

4. IPv6 is now disabled on that service.

To turn IPv6 back on later, run this command (replacing "Wi-Fi" with your service name):

sudo networksetup -setv6automatic Wi-Fi

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