]] Russ Allbery > That, however, is also a good point. This specific case is the place > where an event model does have a clear advantage. It looks like the > preferred strategy in the systemd model is to teach daemons to watch for > this themselves, which while certainly a good idea (most high-quality UDP > daemons I know of that care about binding to specific interfaces do in > fact do this), is decidedly non-trivial and hard to do portably if the > daemon doesn't already support it. Freebind sockets get one out of a lot > of the places where this is needed, but not all of them.
I believe you can do this fairly easily. A is the service that needs to be reloaded when a network device shows up. In A's service file, have ReloadPropagatedFrom=network.target and then make your ifup@.service include an ExecStart=systemctl reload network.target. You probably want the same for ExecStop too, to handle interfaces going away. Another alternative is having multiple instance services and using BindTo=sys-subsystem-net-devices-%i.device (like ifup@.service is doing). -- Tollef Fog Heen UNIX is user friendly, it's just picky about who its friends are -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
