A lot of OS X Yosemite users are complaining that dscacheutil is not helping with clearing DNS cache. Here is quick guide to try with discoveryutil. To completely clear all DNS caches in OS X Yosemite, target both MDNS (Multicast DNS) and UDNS (Unicast DNS) with two different commands. Step 1. Open Terminal.app Step 2. Insert this command to terminal to Clear … [Read more...] about How to Clear DNS Cache with discoveryutil in Mac OS X Yosemite