From another remote IP I can access NFS(debian) without problems typing:
mount publicIP:/home/me/NFS_ISO NFS_ISO/
When I try to add SR NFS ISO through XenCenter 6.5 with share name:
publicIP:/home/me/NFS_ISO
It thinks about 5min and then I receive error: Creating SR
The SR failed to complete the operation
Check your settings and try again.
XenServer 6.5 is also on public IP