+++ This bug was initially created as a clone of Bug #1173749 +++

spice-vdagent.service works fine when booting into graphical.target, but fails
when booting into multi-user.target and switching to graphical.target with
"systemctl isolate graphical.target" or "init 5".

There is /usr/lib/udev/rules.d/70-spice-vdagentd.rules, which enables the
socket once the virtio port appears. Apparently this is not part of the state
which is kept across isolate.

Is there anything that can be done to make udev triggered units stay across
isolate?
Maybe spice-vdagentd.socket needs IgnoreOnIsolate=true?