package isc-dhcp-server 4.2.4-5ubuntu2.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127

[Utkarsh Patange]

isc-dhcp-server refuses to update.
dpkg --configure isc-dhcp-server exits with an error and exit status 127

ProblemType: Package
DistroRelease: Ubuntu 13.04
Package: isc-dhcp-server 4.2.4-5ubuntu2.1
ProcVersionSignature: Ubuntu 3.8.0-26.38-generic 3.8.13.2
Uname: Linux 3.8.0-26-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.1
AptOrdering: isc-dhcp-server: Configure
Architecture: amd64
Date: Fri Jun 21 13:34:59 2013
DhServerLeases:

DpkgTerminalLog:
 Setting up isc-dhcp-server (4.2.4-5ubuntu2.1) ...
 /var/lib/dpkg/info/isc-dhcp-server.config: 12: /etc/default/isc-dhcp-server: option: not found
 dpkg: error processing isc-dhcp-server (--configure):
  subprocess installed post-installation script returned error exit status 127
ErrorMessage: subprocess installed post-installation script returned error exit status 127
InstallationDate: Installed on 2013-01-26 (146 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
MarkForUpload: True
ProcCmdline: BOOT_IMAGE=/vmlinuz-3.8.0-26-generic root=UUID=a4d0867a-cbce-4bf1-87dd-557a3bcacb49 ro quiet splash vt.handoff=7
SourcePackage: isc-dhcp
Title: package isc-dhcp-server 4.2.4-5ubuntu2.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127
UpgradeStatus: Upgraded to raring on 2013-04-24 (58 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.