root@pseudo:~# apt-get install nfs-kernel-server
Reading package lists... Done
Building dependency tree       
Reading state information... Done
nfs-kernel-server is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 65 not upgraded.
1 not fully installed or removed.
After this operation, 0B of additional disk space will be used.
Setting up nfs-kernel-server (1:1.2.0-4ubuntu4.2) ...
 * Exporting directories for NFS kernel daemon...           [ OK ] 
 * Starting NFS kernel daemon                               [fail] 
invoke-rc.d: initscript nfs-kernel-server, action "start" failed.
dpkg: error processing nfs-kernel-server (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 nfs-kernel-server
E: Sub-process /usr/bin/dpkg returned an error code (1)