We'll wait until ios 9 is released for any further investigation (thats what we do since ios 4 even if most of the users here in that very thread don't accept it or find it annoying...)
AppleTV4/iPhone/iPod/iPad: HowTo find debug logs and everything else which the devs like so much: click here
HowTo setup NFS for Kodi: NFS(wiki)
HowTo configure avahi (zeroconf): Avahi_Zeroconf(wiki)
READ THE IOS FAQ!: iOS FAQ(wiki)