sudo apt install debian-installer-9-netboot-amd64 dnsmasq

sudo ln -s /usr/lib/debian-installer/images/9/amd64/gtk /srv/tftp

sudo iptables -A INPUT -p udp --dport 67 -j ACCEPT -m comment --comment "dhcp"
sudo iptables -A INPUT -p udp --dport 69 -j ACCEPT -m comment --comment "tftp"
sudo iptables -A INPUT -p tcp --dport 53 -j ACCEPT -m comment --comment "dns/tcp"
sudo iptables -A INPUT -p udp --dport 53 -j ACCEPT -m comment --comment "dns/udp"

  /etc/dnsmasq.d/local.conf
--------------------------------------------------------------------------------
interface=lan
bind-interfaces
dhcp-range=172.16.1.50,172.16.1.99,255.255.255.0,1h
dhcp-boot=pxelinux.0,pxeserver,172.16.1.1
enable-tftp
tftp-root=/srv/tftp
--------------------------------------------------------------------------------

sudo systemctl restart dnsmasq