Internal Program Version: systemd  257.5

Udev creates and removes device nodes in /dev for devices discovered or
removed from the system. It receives events via kernel netlink messages
and dispatches them according to rules in /usr/lib/udev/rules.d/. Matching
rules may name a device node, create additional symlinks to the node,
call tools to initialize a device, or load needed kernel modules.

https://www.freedesktop.org/wiki/Software/systemd