port=0  # no dns
listen-address=192.168.1.131
interface=eth2

enable-tftp
tftp-root=/tftpboot

dhcp-range=192.168.72.200,192.168.72.250,255.255.255.0
#dhcp-range=192.168.72.200,static,255.255.255.0
dhcp-host=00:0c:29:69:68:c4,192.168.72.202,ttt

# Match the proc arch
# https://www.iana.org/assignments/dhcpv6-parameters/dhcpv6-parameters.xhtml#processor-architecture
dhcp-match=BIOS, option:client-arch, 0        #0x0000, x86_64
dhcp-match=UEFI32, option:client-arch, 6        #0x0006, x86 uefi
dhcp-match=UEFI, option:client-arch, 7        #0x0007, x86_64 uefi
dhcp-match=PPC64, option:client-arch, 12        #0x000c, powerpc open firmware
dhcp-match=PPC_OPAL, option:client-arch, 14        #0x000e, POWER OPAL v3
#dhcp-vendorclass=BIOS,PXEClient:Arch:00000      #x86_64 BIOS
#dhcp-vendorclass=UEFI32,PXEClient:Arch:00006    #x86 UEFI
#dhcp-vendorclass=UEFI,PXEClient:Arch:00007      #x86_64 UEFI

# USE iPXE install
dhcp-match=set:IPXE,175  # ipxe client has 175 option
dhcp-boot=tag:!IPXE,tag:BIOS,ipxe/undionly.kpxe
dhcp-boot=tag:!IPXE,tag:UEFI,ipxe/ipxe.efi
dhcp-boot=tag:IPXE,ipxe/boot.ipxe

# USE Grub2 install
# will read /tftpboot/grub.cfg  or boot/grub2/grub.cfg
#dhcp-boot=tag:PPC64,boot/grub2/powerpc-ieee1275/core.elf
#dhcp-boot=tag:BIOS,boot/grub2/i386-pc/core.0
#dhcp-boot=tag:UEFI,boot/grub2/x86_64-efi/core.efi



[root@pxe /]# tree -L 3 /tftpboot/
/tftpboot/
├── boot
│   └── grub2
│       ├── fonts
│       ├── grub.cfg
│       ├── grub.cfg-01-00-0c-29-69-68-c4
│       ├── i386-pc
│       ├── locale
│       ├── powerpc-ieee1275
│       └── x86_64-efi
├── grub.cfg.ori
├── ipxe
│   ├── boot.ipxe
│   ├── ipxe.efi
│   └── undionly.kpxe
└── mnt -> /mnt/

[root@pxe /]# rpm -qa |grep -E "ipxe|grub2"
ipxe-bootimgs-20180825-2.git133f4c.el7.noarch
grub2-common-2.02-0.86.el7.centos.noarch
grub2-tools-2.02-0.86.el7.centos.x86_64
grub2-pc-modules-2.02-0.86.el7.centos.noarch
grub2-2.02-0.86.el7.centos.x86_64
grub2-efi-x64-modules-2.02-0.86.el7.centos.noarch
grub2-tools-minimal-2.02-0.86.el7.centos.x86_64
grub2-tools-extra-2.02-0.86.el7.centos.x86_64
grub2-pc-2.02-0.86.el7.centos.x86_64
grub2-ppc64-modules-2.02-0.86.el7.centos.noarch


[root@pxe ipxe]# cat /tftpboot/ipxe/boot.ipxe
#!ipxe
:start
menu iPXE Boot Options
item macip Install from MAC or IP ipxe file
item default Install from default.ipxe file
item shell iPXE shell
item local Boot from Local Disk
item reboot Reboot

choose --default macip --timeout 5000 option && goto ${option}

:shell
shell

:macip

set base http://${next-server}
chain ${base}/${mac}.ipxe || chain ${base}/${ip}.ipxe ||  goto default

:default
chain ${base}/default.ipxe || goto shell

:local
sanboot --no-describe --drive 0x80

:reboot
reboot