Description of problem:
When installing the nbd package, there is nothing that automatically loads the kernel module nbd when using the nbd@.service.  The module is needed for the client side to work.


Version-Release number of selected component (if applicable):
nbd-3.16.1-1.fc26.x86_64


How reproducible:
Every time.


Steps to Reproduce:
1. systemctl start nbd@...


Actual results:
The service fails.


Expected results:
Successfully activation of the device.


Additional info:
I'm not sure if this is intentional or not.  I worked around it by adding a file in /etc/modules-load.d, and then things work fine.  Most services don't need that kind of additional help to work, however, so I felt it could be worth a report.

I can see reasons not to add this to all systems installing nbd.  After all, only the client side needs the module.  Perhaps a ExecStartPre configuration running "modprobe nbd" in the nbd@.service file, or would that be too ugly.

As I said, maybe this is intentional.  Feel free to close immediately with "won't fix" if so.