Gotham has the libnfs.dll we had before 1.6.2 ... the socket fix was merged upstream in current libnfs mainline - it might hit xbmc at some point after gotham. Gotham has only the fix from bossanova808 ...
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)