Hello Jimi,
volatile.ethX.hwaddr is also required for OVH and online.net.
stale cached images is great option for new images/containers, yes is the default.
Explanation from Stephane: 3.0 - image cache update?
Root/Dedi’s:
2 Disks: My advice is to create a partition with a ZFS pool (block device) instead of a loop device.
3 Disks: Buy an OS disk (SSD or HDD) at Hetzner and use the other 2 disks dedicated for containers.
I have a 3-node cluster at Hetzner and it’s great!