If you’re on a blazing fast internet but “some” sites open really slow, most probably, I’m about to solve your problem. In fact, I was having the same issue for a few months and couldn’t find a working solution, until now.
This is straightforward, and you can follow the below instructions to implement this quickly (for macOS):
- Open the System Settings app, and navigate to the Wi-Fi area
- Click on the Details button to the right of the connected Wi-Fi
- Go to the TCP/IP section in the popup that opens, and
- Change Configure IPv6 value from Automatically to Link-Local Only
And you’re done!
I got to know about this from the below comment on a Reddit post as I was looking for a solution. The comment is originally for Windows and talks about disabling the IPv6 to get rid of the issue.
So… I searched how can I disable IPv6 on macOS that I am currently using, and got the solution that I have shown in the screenshot. After implementing the solution, I could really feel the difference – sites that used to stuck are now opening without issues.
I got so excited to find a working solution finally that I even tweeted about it, as you can see below.
Why does it work?
Now, the next question is, why does disabling IPv6 solve the problem, at least for me?
I don’t know, honestly!
But I found an interesting post on Reddit that explains it like:
My first theory is while your LAN/local network has IPv6, your ISP may not provide IPv6 globally so you have to relay all traffic from IPv6 to IPv4 with something running NAT64.
But there’s also a slight chance that some things like VPNs might not work after you disable the IPv6. And if that’s the case, you will have to dig some more to find a solution that works for your case.
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