@downgrade, basically
$ dpkg -l | grep 237-3ubuntu10 -> that should give you the list of systemd debs installed
download those from https://bugs.launchpad.net/~ubuntu-security-proposed/+archive/ubuntu/ppa/+build/16258134
and use 'sudo dpkg -i *.deb'
@downgrade, basically
$ dpkg -l | grep 237-3ubuntu10
-> that should give you the list of systemd debs installed
download those from https:/ /bugs.launchpad .net/~ubuntu- security- proposed/ +archive/ ubuntu/ ppa/+build/ 16258134
and use 'sudo dpkg -i *.deb'