Linux/dhcpd

udhcpd

# Ubuntu 20 - udhcpd
apt install dhcpd

/etc/udhcpd.conf

start           10.0.0.10
end             10.0.0.20
interface       eth0

opt     dns     10.0.0.1 10.0.0.2
option  subnet  255.255.255.0
opt     router  10.0.0.1
#option dns     10.0.0.3   # appened to above DNS servers for a total of 3
option  domain  lab
option  lease   864000          # 10 days of seconds

# PXE
siaddr          10.0.0.1
boot_file       boot.pxe