WS2K25 DHCP_ACK Failure

processor

Hi,

I’m using fog server 1.5.10 on Ubuntu 22.04.
Till now everything worked but this week we had to create a WS2K25 dump.

And just after the grub try to start on hard disk we have this error :

Launching GRUB...
begin pxe call(type=DHCP_ACK)...
Fatal: DHCP_ACK failure!
PXE unload fails: 106
Starting cmain() ...

The test have been done on Optiplex 5050 and Optiplex 9020.

On the 9020, changing the SATA type form RAID or AHCI to SATA in BIOS solves the issue but on 5050 the SATA option does not exist.

Anyway, any other os image from Linux to W11 or WS2K22 works without any issue with AHCI setup.

Any idea on how to solves this ?