A fix for the ongoing WiFi and connectivity issues many Mac users are experiencing may be on the horizon. In the latest build of OS X, Apple has dropped the discoveryd networking process, which many point to as reason for their headaches.
In a surprising twist, Apple is going with mDNSResponder — the process discoveryd replaced.
Apple hasn’t addressed the change, and we should all keep in mind this is a beta build of the operating system. 9to5Mac is reporting issues with services like Handoff and AirDrop (any Bonjour features, really) may have brought on the regression to mDNSResponder.
Reverting to mDNSResponder was also a clever hack circulating in the Developer community for those who had woeful connectivity. The mDNSResponder networking process is also open source, something Apple has been more amiable towards lately.