package avahi-daemon 0.6.31-4ubuntu4 failed to install/upgrade: underprosessen installerte pre-removal-skript returnerte feilstatus 1

Cannot purge avahi-daemon.
Manually killing the avahi-daemon process before purging resolved the issue.

This only happens if the computer is on a .local domain.

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: avahi-daemon 0.6.31-4ubuntu4
ProcVersionSignature: Ubuntu 3.19.0-21.21-generic 3.19.8
Uname: Linux 3.19.0-21-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
AptOrdering:
 libnss-mdns: Purge
 avahi-utils: Purge
 avahi-daemon: Purge
 NULL: ConfigurePending
Architecture: amd64
Date: Thu Jul 9 07:48:43 2015
DuplicateSignature: package:avahi-daemon:0.6.31-4ubuntu4:underprosessen installerte pre-removal-skript returnerte feilstatus 1
ErrorMessage: underprosessen installerte pre-removal-skript returnerte feilstatus 1
InstallationDate: Installed on 2014-12-05 (215 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4
SourcePackage: avahi
Title: package avahi-daemon 0.6.31-4ubuntu4 failed to install/upgrade: underprosessen installerte pre-removal-skript returnerte feilstatus 1
UpgradeStatus: Upgraded to vivid on 2015-04-23 (76 days ago)