NFS share doesn't get mounted by hostname; however, mount succeeds when IP address is used instead of hostname.

Issue

• Why NFS share does not get mounted with hostname?
• When trying to mount the NFS share by hostname, it fails with an error 'No such file or directory'

# mount -t nfs server.example.com:/share /mnt/nfs -vvv
mount.nfs: trying text-based options 'vers=4.1,addr=xx.xx.x.xx,clientaddr=xx.xx.x.xx'
mount.nfs: mount(2): Protocol not supported
mount.nfs: trying text-based options 'vers=4.0,addr=xx.xx.x.xx,clientaddr=xx.xx.x.xx'
mount.nfs: mount(2): No such file or directory