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Author Topic: AirPort fails to connect to WiFi: error -3151  (Read 2867 times)

TheHappyHacker

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AirPort fails to connect to WiFi: error -3151
« on: December 10, 2022, 08:09:27 PM »

Somewhat to my surprise, my G4 detected my home WiFi and offered to connect. It even knows to ask for the password. But it fails instantly with: "An error occurred while trying to join the selected AirPort network: -3151"

Can anyone give me a hint where to look for what this means and what to do about it?
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Power Macintosh G4 533 (Digital Audio) rescue
I told you I'm not a Mac expert and I'd have a lot of questions....

robespierre

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Re: AirPort fails to connect to WiFi: error -3151
« Reply #1 on: December 10, 2022, 09:59:12 PM »

-3151  kOTBadOptionErr: The specified protocol options were in an incorrect format or contained illegal information.
I think that the network stack is probably unprepared for the packets coming from the router. Do you run IPv6?
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TheHappyHacker

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Re: AirPort fails to connect to WiFi: error -3151
« Reply #2 on: December 11, 2022, 08:54:49 AM »

My WiFi is an Android cell phone acting as a hotspot. It's probably offering a lot of protocol options that didn't exist twenty years ago. My laptop connects to it using IPv4. The connection is password protected, and WiFi security has changed a lot over the years.

I'll poke around on the phone and see what configuration options I can control.

Just knowing what the numeric error code means is really helpful. Where would I look to decode that (and others I might encounter)? I'm hardly a Mac expert, I've been running Linux for nearly 30 years now....

Thanks for the quick help!
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Power Macintosh G4 533 (Digital Audio) rescue
I told you I'm not a Mac expert and I'd have a lot of questions....

GaryN

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Re: AirPort fails to connect to WiFi: error -3151
« Reply #3 on: December 11, 2022, 03:43:29 PM »

In advance, I'm sorry but I just can't help myself…

FIRST: "Somewhat to my surprise, my G4 detected my home WiFi and offered to connect…"

LATER: Oh yeah, by the way… "My WiFi is an Android cell phone acting as a hotspot."

I just can't imagine how there could be any kind of hiccup there…  ;D
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