Comment by rab_oof

On a mid 2012 13" non-retina (the 16 GiB hackable, 2 SSD one) MBP, fixed wifi by doing a clean Yosemite install, no transfer settings and then deleting network preferences plists. :(

Works, stable on 10.10.1. (Discoveryd mdns announce disablement doesn't flag doesn work at all though.)