Still does not boot in Hetzner hosted CHR. 7.1.1 starts OK, but none of the 7.2 rc{1,2,3} are able to mount the boot disk. Probably something to do with the disk driver (scsi-virtio, maybe, dunno) present in 7.1 line missing from 7.2. Couldn't get OSPFv2 with MD5 security to work in the 7.1.1 agains...