If you’re a Mac user, you’re probably thinking of updating to OS X 10.10, better known as Yosemite.
In fact, many of you will have updated already.
Like me, you may even be affected.
But traffic such as UDP and TCP just doesn’t get through.
What we know
All we know is that for those of us who are affected:
- Wi-Fi network meltdowns happen repeatedly.
- Meltdowns don’t seem to recover on their own.
- You rarely get more than about three minutes between meltdowns.
- No such symptoms were observed before updating to Yosemite.
Can you help?
I’m a hacked-together shell script, run with root privilege using the sudo command.
You can click on the image below for a text version to copy-and-paste to use yourself:
- The dig +tries=1 +time=3 command does the lookup, waiting 3 seconds for an answer.
- The grep and cut commands extract some handy feedback (the time taken if the DNS request succeeds).
- The ifconfig down/up commands force the Wi-Fi network to reconnect.
- The device name en0 is the Wi-Fi network card on my Mac.
- The sleep 5 takes a 5-second break before trying again.
When the Wi-Fi network re-connects, traffic flows again until the next meltdown.
So this really is a bodge, on a par with that old support favourite, “Have you tried rebooting?”
What’s your bodge?