I have a cell modem connected to my server that I want to use as a means to get notification emails out when the landline dies. To nicely separate normal network access and this exceptional cell m...

Given systemd is ubiquitous with modern day GNU/Linux it only makes sense that it be able to do just about everything under the sun; which strictly adheres to the UNIX philosophy 😂. While the move to systemd has not always been a popular one, I too once hated it, it