When the server is connected to the Internet, this service file can launch the proxy successfully, but it doesn't work on system startup, supposedly due to the lack of an connection with Internet access. So I need systemd to make sure the connect has been established before it launch this daemon.
I don't use NetworkManger, so my assumption is that the network-online.target does not exist at all. (Seems that `systemctl list-units` confirms that.)
Try wrapping /srv/proxy/aproxy/bin/main with a script that performs a ping and runs `main` when the connection is established.
Systemd allows you to override the configuration.[1] If the unit file you pasted is provided by the package, it surely exists in /usr/lib/systemd/system/aproxy.service. Just create /etc/systemd/system/aproxy.service and override ExecStart. This post may be helpful.[2]
[1] http://lists.freedesktop.org/archives/systemd-devel/2013-March/009496.html
[2] https://bbs.archlinux.org/viewtopic.php?pid=1192998#p1192998 -- Kind regards, Damian Nowak StratusHost www.AtlasHost.eu
