I am so utterly disappointed with apple. Beyond the behavior mentioned above, apple's latest OS release has some serious deficiencies in the wifi stack. Accordingly, it has been difficult, if not impossible to maintain a network connection at my house using any of the OS X machines (since I patched them all at the same time, doh!). I have a new ASUS RT-AC87R router that serves as the wifi AP, which the previous version of OSX had no troubles with. Also the various other network connected devices all have no issues connecting to the AP, ubuntu, windows server 2012, android phones, a kindle, samsung TV, dlink HD wifi camera and yamaha receiver all still connect wonderfully. Apple support states the problem is with my $300 router that works fine with every other device and refuses to acknowledge the thousands of people whose life quality they negatively effected. I can not connect to anything from my macbook, so getting coursework accomplished after a long work day from home is super difficult as I have to use an ubuntu or windows 2012 server desktop, which is a burden that I shouldn't have.