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I'm unwilling to restart my machine, this is a $2000 UNIX laptop, not some crappy Windows 98 PC.

9:03 up 12 days, 14:18, 15 users, load averages: 1.64 1.57 1.47

My iPhone's wifi is perfect, and it also has a longer uptime.
LOL! Well, enjoy not having things function hahahaha
 
So I replaced my router and switched to 5ghz and the wifi seems to work reliably now. Maybe it just doesn't like 2.4?
 
Thanks! Your example is much harder to dismiss as a 3rd party problem.

Please write to Apple support: https://www.apple.com/feedback/

I left them a report for 10.10.2, 10.10.3 and 10.10.3 with the new router. I'm not happy about writing naggy feedback, I don't like to receive those myself, but what else can I do? I'm desperate.

This is an example of what I've sent them:

Every 15 minutes pings timeout to remote addresses for about a minute.
Pings to the router are fine.
All other devices on the router are fine (Windows, Andorid, iPhone, old iPad, Mavericks MBA).
Router is Cisco EPC3925.

I've already sent a similar report for 10.10.2.

Multiple users report the same, with different Macs and router vendors. All Yosemite.

Diagram of the pings: [link]

No particular console log activity.

MacBook works fine on my work Wi-Fi.

Hello. Did anyone find a solution to this problem. I have exactly the same problem. I live in France and I have a SFR Box (NB6) modem and a Macbook Air running the latest OS version 10.12.4 (Sierra). I read infinite forums but still no solution. Please help!
 
I have this same issue on MacBook Pro (Retina, 13-inch,Early 2015) on El Capitan.

For me SMC reset (or maybe just shutdown and reboot) works as fix. The problem pops up again if the MacBook runs out of battery and goes to some kind of hibernation?

Same symptoms: pings suddenly fail but restore after a time. All other network devices are working fine.

I didn't have this problem before updating some security/OS patches, I think those started to cause this.
 
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