/etc/init/netscript-shutdown.conf is in netscript-2.4-upstart 5.3.0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | # netscript shutdown - shutdown system networking controlled by netscript
#
# This task stops all the network daemons and interfaces controlled by
# netscript
description "shutdown system networking controlled by netscript"
start on runlevel [06]
task
exec netscript stop
|