I always used to cast media to my Android TV (running Kodi 16) via Airplay, until i upgraded it to 17 Krypton …
Now the Zeroconf option is gone.. disappeared from settings menu, so i cannot see the Airplay renderer on my LAN anymore.
Furthermore, my tv upgraded Kodi by itself, so i had trouble to get it back to version 16 Jarvis .. 
Any ideas/suggestions pleeease?? Thanks!