package open-iscsi 2.0.873-3ubuntu11 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

Prompted to submit bug report AS

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: open-iscsi 2.0.873-3ubuntu11
ProcVersionSignature: Ubuntu 3.19.0-22.22-generic 3.19.8-ckt1
Uname: Linux 3.19.0-22-generic i686
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: i386
Date: Wed Jul 22 11:42:29 2015
DuplicateSignature: package:open-iscsi:2.0.873-3ubuntu11:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-07-14 (8 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha i386 (20150215)
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4
SourcePackage: open-iscsi
Title: package open-iscsi 2.0.873-3ubuntu11 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)