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Turn off IPv6 on Older Macs

This describes how to turn off IPv6 on older Macs.

Turning off IPv6 can resolve some obscure networking issues. These instructions work for operating systems such as Monterey, which use "System Preferences" instead of "System Settings" used in more modern versions of the OS.

Go to the Apple menu, then choose "System Preferences".
Click "Network".
Click "Wifi" in the list on the left.
Note: if you connect with a cable or other interface, choose it instead.
Click "Advanced".
Click the "TCP/IP" tab at the top.
Next to "Configure IPv6", choose "Link-local only".
Click "OK".
If requested, click "Apply".




I usually write a blog post about once a week. The latest post can be viewed here: Think for Yourself: In the end, everything is just an opinion. Be skeptical, and think for yourself! (posted 2026-04-25 at 21:12:02). Or go to the Home Page of My Blog to choose a post to view.

I do podcasts too! You can listen to my latest podcast, here: OJB's Podcast 2026-04-14 How Far is that Star?: How would we really know how big the universe is? Or subscribe to my podcast RSS feed, on my RSS Feeds page.

If you're not sure what to view from the thousands of pages on my site, here are some suggestions: My Latest Airshow Report (photos and movies from Warbirds Over Wanaka, 2026), My Favourite Wines and Beers (tasting notes for some of my favourites), An Interesting Astronomical Observation (learn a bit about astronomy from these observing notes), See Some Photos (A short rail journey through the Taieri Gorge), Read Some Mac Tips (Learn about how to use your Mac, and fix some problems).

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