xcp-networkd package upgrade fails in Ubuntu

[antonym]

xcp-networkd fails when upgrading on Ubuntu:

Setting up xcp-networkd (1.3.2-14ubuntu1) ...
Installing new version of config file /etc/init.d/xcp-networkd ...
 * Starting XCP networking daemon xcp-networkd                                                                                                                                                                                                 * xcp-networkd is already running.
invoke-rc.d: initscript xcp-networkd, action "start" failed.
dpkg: error processing xcp-networkd (--configure):
 subprocess installed post-installation script returned error exit status 1
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
Processing triggers for ureadahead ...
Errors were encountered while processing:
 xcp-networkd
E: Sub-process /usr/bin/dpkg returned an error code (1)

Stopping the service and then reapplying the update allows for the package to install correctly. I'm guessing prerun in xcp-networkd.spec is only tuned for CentOS.