systemd - standard place to run stuff after the network is up?

[Bruno Wolff III]

I want to try to modprobe netconsole during boot, but it needs to happen
after the network is up. Is there any standard place (rc.local and
modules-load seem to happen too early) to do this?

I filed https://bugzilla.redhat.com/show_bug.cgi?id=746481 against systemd,
but it has been closed notabug. So I am looking for simple alternatives
to do this. If there aren't any, then it looks like I need to make a custom
service that waits for networking to be up.