apt -y install dnsmasq pxelinux tcpdump iftop ethtool
vi /etc/dnsmasq.conf
...
# disable DNS
port=0
# dhcp range, lease for 12 h
dhcp-range=192.168.1.2,192.168.1.60,12h
# option 3 = default gateway
dhcp-option=3,192.168.1.1
# option 6 = DNS servers
dhcp-option=6,192.168.1.1
dhcp-host=00:01:02:03:04:05,192.168.1.9
dhcp-host=06:07:08:09:0a:0b,192.168.1.5
dhcp-host=0c:0d:0e:0f:00:01,192.168.1.52
pxe-service=x86PC,"Network Boot",pxelinux
enable-tftp
tftp-root=/srv/tftpboot
systemctl restart dnsmasq.service
mkdir -p /srv/tftpboot
cd /srv/tftpboot/
cp /usr/lib/PXELINUX/pxelinux.0 /srv/tftpboot/
cp /usr/lib/syslinux/modules/bios/ldlinux.c32 /srv/tftpboot/
cp /usr/lib/syslinux/memdisk /srv/tftpboot/
wget https://deb.debian.org/debian/dists/stable/main/installer-amd64/current/images/netboot/mini.iso
cd /srv/tftpboot
mkdir pxelinux.cfg
cd pxelinux.cfg
vi 01-00-01-02-03-04-05
...
default deb
label deb
linux memdisk
append iso
initrd mini.iso