I am automating some configurations on my systems using Puppet (however, that is not really relevant here). For a group of machines I want to load a kernel module at boot time. The most elegant way seems to edit /etc/modules and add one on an individual line. However, I would like to use separate files in a ".d" directory structure for easier maintainability, rather than having Puppet editing a file.

For modprobe and specifying the options for or blacklisting modules, there's /etc/modprobe.d/, but what's the most elegant way for actually loading modules at boot time using a single new file? Basically, I'm looking for the non-existing /etc/modules.d/ directory.

Any suggestions?