Cannot remount nfs share, getting mount.nfs: mount(2): Invalid argument

Issue

• Unable to remount nfs share with desired mount options.

# cat /etc/fstab | grep -i share
y.y.y.y:/nfshare /share nfs    defaults,hard 0 0

# mount -vo remount,soft  /share
mount.nfs: mount(2): Invalid argument
mount.nfs: an incorrect mount option was specified