[Bug 1302300] Re: package isc-dhcp-client 4.2.4-7ubuntu9 failed to install/upgrade: subprocess new pre-installation script returned error exit status 2

[Maki Kato]

I just got 
The following extra packages will be installed:
  isc-dhcp-client
The following packages will be upgraded:
  isc-dhcp-client
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/640 kB of archives.
After this operation, 1,024 B of additional disk space will be used.
Do you want to continue? [Y/n] 
(Reading database ... 260277 files and directories currently installed.)
Preparing to unpack .../isc-dhcp-client_4.2.4-7ubuntu10_amd64.deb ...
/var/lib/dpkg/tmp.ci/preinst: 17: /var/lib/dpkg/tmp.ci/preinst: Syntax error: "fi" unexpected (expecting "then")
dpkg: error processing archive /var/cache/apt/archives/isc-dhcp-client_4.2.4-7ubuntu10_amd64.deb (--unpack):
 subprocess new pre-installation script returned error exit status 2
Errors were encountered while processing:
 /var/cache/apt/archives/isc-dhcp-client_4.2.4-7ubuntu10_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

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https://bugs.launchpad.net/bugs/1302300

Title:
  package isc-dhcp-client 4.2.4-7ubuntu9 failed to install/upgrade:
  subprocess new pre-installation script returned error exit status 2

Status in “isc-dhcp” package in Ubuntu:
  Fix Committed

Bug description:
  After a fresh install of Lubuntu 14.04 Beta 2, I performed a system
  update and received this error.

  ProblemType: Package
  DistroRelease: Ubuntu 14.04
  Package: isc-dhcp-client 4.2.4-7ubuntu9
  ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
  Uname: Linux 3.13.0-19-generic i686
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: i386
  Date: Thu Apr  3 22:39:29 2014
  DhclientLeases:
   
  DuplicateSignature: package:isc-dhcp-client:4.2.4-7ubuntu9:subprocess new pre-installation script returned error exit status 2
  ErrorMessage: subprocess new pre-installation script returned error exit status 2
  InstallationDate: Installed on 2014-04-04 (0 days ago)
  InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Beta i386 (20140326)
  ProcCmdline: BOOT_IMAGE=/vmlinuz-3.13.0-19-generic root=UUID=7a558147-80fa-4ad7-b5c2-8f9a78b8de97 ro quiet splash vt.handoff=7
  SourcePackage: isc-dhcp
  Title: package isc-dhcp-client 4.2.4-7ubuntu9 failed to install/upgrade: subprocess new pre-installation script returned error exit status 2
  UpgradeStatus: No upgrade log present (probably fresh install)

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