- support taking a btrfs snapshot at startup and dropping it afterwards
- maybe: hookup nspawn and PrivateNetwork=yes with "ip netns"
- allow booting disk images with a GPT signature using the bootloaderspec partition uuids
+ - generate predictable mac addresses for the netdev we create (host0), maybe based on guest's machine
+ name and machine-id of host (?)
* cryptsetup:
- cryptsetup-generator: allow specification of passwords in crypttab itself