root@headnode:/var/log# apt-get purge dhcp3-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
  dhcp3-server*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 918kB disk space will be freed.
Do you want to continue [Y/n]? Y
(Reading database ... 161865 files and directories currently installed.)
Removing dhcp3-server ...
invoke-rc.d: unknown initscript, /etc/init.d/dhcp3-server not found.
dpkg: error processing dhcp3-server (--purge):
 subprocess installed pre-removal script returned error exit status 100
Errors were encountered while processing:
 dhcp3-server
E: Sub-process /usr/bin/dpkg returned an error code (1)