[one-users] Could not resolve hostname 84.21.xx.yy:

[clouduser s]

OS: Ubuntu 9.10

I followed the instruction as given in the link
http://www.slideshare.net/rsmontero/building-clouds-one-14

vi /etc/exports
    /srv/cloud  84.21.xx.yy(rw,async,no_subtree_check,no_root_squash)

If i do restart such as
$sudo /etc/init.d/nfs-kernel-server stop
$sudo /etc/init.d/nfs-kernel-server start
 * Exporting directories for NFS kernel
daemon...
exportfs: 84.21.xx.yy has non-inet addr
 exportfs: 84.21.xx.yy has non-inet addr

[ OK ]
  * Starting NFS kernel
daemon
[ OK ]

We cant define alabhabetic such as   84.21.xx.yy ?


$ssh 84.21.xx.yy
  ssh: Could not resolve hostname 84.21.xx.yy: Name or service not known
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