SystemD Trigger

[md at rpzdesign.com]

Hello Tinc'ers:

I want to use TIncVPN in a systemd Ubuntu environment.

But I want other services to run AFTER tinc has started running and has 
its tun0 device initialized and ready.

Does anybody have a suggestion on what I put into the service files so 
that they are ExecStart after Tinc has come up at boot time?

Thanks,

Marco