Hi Nils, rc_sys from /etc/rc.conf is empty, but after removing -lxc from /etc/init.d/hostname the service is well started. Thanks!
So, for the record: as112 ~ # grep rc_sys /etc/rc.conf #rc_sys="" as112 ~ # grep keyword /etc/init.d/hostname keyword -docker -lxc -prefix -systemd-nspawn as112 ~ # vim /etc/init.d/hostname as112 ~ # rc-status boot | grep hostname hostname [ started ] as112 ~ # grep keyword /etc/init.d/hostname keyword -docker -prefix -systemd-nspawn as112 ~ # Cheers, -- Alarig