1. Add following lines to a new file: /etc/dnsmasq.d/pxe.conf

# Configuration of PXE boot for main fsi server 172.16.0.14


# The boot filename, Server name, Server Ip Address
dhcp-boot=bios/pxelinux.0,pxeserver,172.16.0.14

# inspect the vendor class string and match the text to set the tag
dhcp-vendorclass=BIOS,PXEClient:Arch:00000
dhcp-vendorclass=UEFI32,PXEClient:Arch:00006
dhcp-vendorclass=UEFI,PXEClient:Arch:00007
dhcp-vendorclass=UEFI64,PXEClient:Arch:00009

# Set the boot file name based on the matching tag from the vendor class (above)
dhcp-boot=net:UEFI32,efi32.efi,pxeserver,172.16.0.14
dhcp-boot=net:BIOS,pxelinux.0,pxeserver,172.16.0.14
dhcp-boot=net:UEFI64,efi64.efi,pxeserver,172.16.0.14
dhcp-boot=net:UEFI,efi64.efi,pxeserver,172.16.0.14

1. kill dnsmasq

   1. cat /run/dnsmasq/dnsmasq.pid

   2. kill <number>

   3. /usr/sbin/dnsmasq -x /run/dnsmasq/dnsmasq.pid -u dnsmasq -7 /etc/dnsmasq.d,.dpkg-dist,.dpkg-old,.dpkg-new --local-service