This causes OpenVPN services to reach the "active" state when the VPN
connection is up (i.e., after OpenVPN prints "Initialization Sequence
Completed"). This allows units to be ordered correctly after openvpn-*
units, and makes systemctl present a password prompt:
$ start openvpn-foo
Enter Private Key Password: *************
(I first tried to implement this by calling "systemd-notify --ready"
from the "up" script, but systemd-notify is not reliable.)
for setting up tunnel/routes.
I had some issues with ipv6, iproute2 fixed those.
Both are equally well supported by upstream.
svn path=/nixpkgs/trunk/; revision=31660
