Tried this on our NAS with a NFS share and it seems to work:
Source: https://apple.stackexchange.com/questions/269285/macos-sierra-mounting-nfs-volumes
On our NAS I had to do what's described here:
The accepted answer only works when the NFS server allows connections on non-reserved ports (i.e. >1024).
For my CentOS 7.3 box this is not the case by default and I had to add insecure to the mount.
E.g.: /my/export 192.168.5.0/24(insecure)
If that's not possible: using mount you can supply an option to allow reserved ports from the Mac side: sudo mount -t nfs -o resvport server:/my/export nfs
