Thank you for the quick reply!

>  There would be no benefit to doing that, because oneshots do not have
> instances, so any up or down script knows exactly what service it is
> starting or stopping. 
I could think of one benefit:

Symlinking the oneshot service directory with other names,
e.g. having a oneshot script for setting up the network
and symlinking it for different interfaces, so that a change
does not have to be made in all the copied scripts
(of course its unlikely to have enough interfaces
to justify this, but it conveys the idea).

Regards

Paul