Regardless of the many issues people were reporting with discoveryd, Apple went ahead and released it anyway. As a result, this piece of software is responsible for a large portion of the thousand cuts. Personally, I’ve wasted many hours just trying to keep my devices talking to each other. Macs that used to go months between restarts were being rebooted weekly. The situation is so bad that I actually feel good when I can just kill discoveryd and toggle the network interface to get back to work.
Seems to be a huge paint point in OS X right now. I’ve experienced this issue once with my new retina MacBook Pro since I got it (a week ago), and it basically stops any data from being transferred to the Mac. The wireless connection remains online, but it just does’t transfer any data. I hope Apple gets to fixing this soon.