Hi Michael, I filed two unwelcome interactions between systemd and LXC on Debian:
(1) lxc: jessie LXC container does not start on hosts with cgroup2 / unified hierarchy https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=958507 (2) lxc: autopkgtest of systemd in stretch fails with LXC backend in cgroup2 / unified hierarchy https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=958508 The latter might deserve your attention... As Debian Stretch has not yet reached to its end of life... Best regards, Ryutaroh