Restore the openvpn.service file from packaging of openvpn 2.3.6, so we
can still start it the same way (as currently described in manuals).
Related: SYS#6303
Change-Id: I2cf96bc1ecca79ae98be1181fbd3c15edad15ca8
Our openvpn server has meanwhile been migrated to 2.5.x, and
establishing backwards compatibility with 2.3.x means we have to
disable ciphers + tls versions that are no longer considered secure.
Related: SYS#6303
We want to use systemd for managing the lifetime of OpenVPN. Take
the debian generator (which should work with busybox ash) and the
openvpn.service (to inhibit the sysvinit script) and the target
file and install it.
On systems that have ran "update-rc.d openvpn defaults" one need
to manually execute a systemctl enable openvpn.service. This is
not done through a post-inst script and I am not sure if we should
do it. This means there is a danger of ending with a unit that
doesn't start OpenVPN automatically after upgrade!
The scripts/packages have not been tested on a device yet.
Oliver Smith
Harald Welte
Holger Hans Peter Freyther