I'm experiencing a very weird network issue on my newish (2014) macbook pro. I've noticed it the last few weeks, but it could have been around longer, perhaps dating back to the Yosemite upgrade. I'm only getting to look at it now.
Mostly macbook works fine, but every now and again it stops talking to the internet. It seems to happen every 15-20 minutes, for a duration ranging from 30 seconds up to 5 minutes. It's mainly an issue for Skype, where I experience occasional disconnections.
I have run
ping youtube.com and it reports
Request timeout for <ip-address> at times corresponding to my outages. Note that it does not say
No route to host.
I have also run ping against my router IP-address and this always works without fault. thus issues on wireless interface can be ruled out.
I have run ping on my actual router too, against the youtube IP-adress, and this reports no fault. this rules out actual service-provider network issues.
I have run ping from my iPhone, and this reports no problems so the issue is almost certainly something to do with macbook, rather than wifi devices in general.
Apple's wireless diagnostics utilities do detect the outages, but provide no solutions. The tools it provides also show no wireless congestion issues, and no problems with signal.
I've tried a whole slew of fixes:
- disabling bluetooth
- changing from 802.11g to 802.11n between 2.4GHz and 5 GHz and changing channels.
- setting IPv6 to link-only
- disabling handoff
I'm going to have a go at the PRAM reset thing if the issue becomes chronic again, and I really don't think I should have to resort to an O/S reinstall.
I would like to understand though, even theoretically what is going on here. It's driving me bananas!