‎Haines Brown wrote:

>systemd-udevd seems to have switched my wireless interface
>f‎rom wlan0 to wlp3s0.

I highly recommend to use udev from Wheezy/Jessie on Unstable
and pin the package ("apt hold udev"). Vdev one day will be our
default device manager anyway.

The correct way to prevent a package from being installed in
Unstable/Ceres:

=====================
‎
Package: [package name] 
Pin: release a=* [or o=*]
Pin-Priority: -1

=====================


>Systemd is not on the system, so where did systemd-logind come from?

systemd-logind is provided by systemd package.


Cheers,
Mitt