I am facing a strange problem with PXE boot.
My actually confuguration work with all computer i try but not with my Intel NUC DN2820FYK, which i buy specially for it

It just show "Starting Porteus Kiosk Edition <http://www.porteus.org>" with unlimited blinking underscore
I tried with verbose initrd.xz, and i see it stuck at : udhcpc (v1.21.1) started
I check dsmasq log file here var/log/daemon.log and last line before stop is :
May 22 14:49:55 porteus-pxe dnsmasq-tftp[22908]: envoyé /home/escadmin/library-pxe/isorw/boot/pxelinux.cfg/initrdpxe.xz à 10.98.30.180
Maybe it's missing firmware for Intel UNDI , PXE-2.1 (build 803) --- Realtek PCIe GBE Family Controller Series v2.59 (01/13/14) in intrdpxe.xz ? I have absolutly no idea how to find and add missing one inside

The strange thing is, in more than 50 boot try, it already load module and boot great a couple of time

Any ideas ? Thanks in advance.
Erwann