On power-off recent "no-sync" txs may be lost. It will cause 2. cases:
- Good piece on disk and recent "complete" db marker lost. Self-Heal by
re-download.
- Bad piece on dis and recent "incomplete" db marker lost. No Self-Heal.
So, can't afford loosing recent "incomplete" markers.
Prevent port scan warnings on Hetzner and potentially other hosting
providers by only detecting ipv6 for linux by reading from
/sys/module/ipv6/parameters/disable