Though I have a pretty good idea of where a Varlink broker would turn up and which init system it would be tied to.
You can run "netstat --listening --unix" to list the UNIX domain servers on your system, to get an impression.
See https://man7.org/linux/man-pages/man7/unix.7.html
Though I have a pretty good idea of where a Varlink broker would turn up and which init system it would be tied to.