Hello,

I am wanting to test a deployment for a Debian 11 KVM VM using a Debian 12 KVM 
VM, but it crashes and bootloops with seemingly no reasoning.

- Debian 12 FAI was booting correctly on the same VM
- Switching nfsroot config from Bookworm to Bullseye made it bootloop
- Replacing `rootovl` by `rd.live.overlay.overlayfs=1 
rd.live.overlay.readonly=1`[1] did not help
- Remaking the NFSROOT doesn't help
- faiserver and fai are both in `NFSROOT_EXTRA_HOSTS` and were correctly 
contacted in Bookworm

The crash seems to come right after NFS mounts but even debug log seem to say 
nothing, and sometimes it just straight up hangs at IPv6 configuration.

Hanging log usingĀ `systemd.log_level=debug systemd.log_target=console 
systemd.journald.forward_to_console=1` : [2]
Crash log using `systemd.log_level=debug systemd.log_target=console 
systemd.journald.forward_to_console=1` : [3]

pxelinux.cfg config (tried with a fresh `fai-chboot - : 
```
append initrd=initrd.img-5.10.0-29-amd64 ip=dhcp  root=/srv/fai/nfsroot:vers=3 
rd.live.overlay.overlayfs=1 rd.live.overlay.readonly=1 console=tty0 
console=ttyS0,115200  FAI_FLAGS=debug,sshd,createvt 
FAI_CONFIG_SRC=nfs://faiserver/srv/fai/fai_config/ FAI_ACTION=install 
systemd.log_level=debug systemd.log_target=console 
systemd.journald.forward_to_console=1
```

(nfs://faiserver/srv/fai/fai_config/ is correct and is a NFS share)

Are there 

[1]: https://github.com/dracutdevs/dracut/issues/1565
[2]: Wasn't able to capture that
[3]: https://paste.opensuse.org/pastes/28fcc183cacb

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