out of context post. Post in reference to this thread: https://forums.fogproject.org/topic/16108/lenovo-thinkstation-p340-tiny-not-conected-to-fog-server?_=1656514236859
Is your fog server on the same IP subnet as the pxe booting computer?
If Yes, then lets execute this tutorial to capture what the dhcp server is telling the target computer. https://forums.fogproject.org/topic/9673/when-dhcp-pxe-booting-process-goes-bad-and-you-have-no-clue
Post the pcap to a file share site like google drive, etc. Share as public with link. Either DM me the link using FOG chat or post the link here and I will look at the pcap.