Maybe of use to some here:

https://github.com/Tookmund/swapspace

This is a system daemon for the Linux kernel that eliminates the need for large, fixed swap partitions.

Usually when you install a GNU/Linux system, it sets up a swap partition on disk. The swap partition serves as virtual memory, so you may need a lot of it. But you can't store data there, so you don't want to sacrifice too much disk space. And it's not always easy, or safe, to change its size afterwards!

Running swapspace solves that problem. You no longer need a large swap partition. You can even do without the whole thing. The program manages swap files for you. These work just like partitions, except they're normal files. You can add more when you need them, or delete some when you want the disk space back. And that is exactly what swapspace does. It constantly monitors your system's virtual-memory needs and manages a pool of swap files accordingly.

With swapspace you can install GNU/Linux in one single big partition, without regrets later about picking the wrong size. Your system can handle the occasional memory-intensive task, without eating up disk space that you'll never get back.

.. my longer story is something like the following.

Networking in chimaera is really the same as in all prior system versions; it's a kernel function to operate the interfaces that dynamically rely on their configurations, and there are some forms of user software available for the administration of those configurations.

The first and oldest unit of such software is nowadays called ifupdown in Devuan (Debian).

ifupdown implements an administration principle where the administrator documents their desired configurations using a special purpose scripting language written into one or more plain text files starting with /etc/network/interfaces. The software is modular with a core bit that offers the adminstration programs ifup, ifdown and ifstate as well as the hook-in to the boot process and the hotplug event handling. ifupdown also provides a well-documented API for extensions that allows for other software packages to be seamlessly incorporated into the networking operations as if belonging to ifupdown; e.g., handling DHCP, handling wireless connectivity, VPN setup and whatnot.

On the side of that we find a couple of network management software packages (package groups), where chimaera in particular includes the two named connman and network-manager. These implement their own ideas of the network configuration task, with a common aim to make networking configuration be administrated "more easily" than by using the special purpose scripting language and programs of ifupdown, and most importantly to provide a "security bypass" that empowers non-root users with network administration abilities.

A side effect of that is that the network management software "wants to rule the city". Then "traditional" administration via ifupdown might be in conflict with it, unless one knows enough about the management software to avoid such conflicts. The easiest way for a root administrator to avoid such conflicts  is to get rid of all and any such management software.