10.0.253.24 is your FOG server with DNSMASQ running on it.
*** Correct.
10.0.253.1 is your router on the 10.0.253.0 subnet. It is also running a dhcp relay/helper service that forwards dhcp requests to your site dhcp server.
*** I accept your description as correct. I have not specifically configured 10.0.253.1 … so where/how it is setup, I am not certain.
172.16.1.1 is your corporate dhcp server that is untouchable (and a bit suspicious at the 1.1 address but…)
*** Yes…
Here is the ltsp.conf. The very last line references the MAC addr of the computer I want to load. Because long term I was nervous about this DNSMASQ answering requests from the wider network, I planned to list the roughly 50 hosts in this file by MAC Addr. My proof of concept was to just put one MAC Addr in to start with…
compteach@iepcomlabsrv:/etc/dnsmasq.d$
compteach@iepcomlabsrv:/etc/dnsmasq.d$ cat ltsp.conf
# Don't function as a DNS server:
port=0
# Log lots of extra information about DHCP transactions.
log-dhcp
# Dnsmasq can also function as a TFTP server. You may uninstall
# tftpd-hpa if you like, and uncomment the next line:
# enable-tftp
# Set the root directory for files available via FTP.
tftp-root=/tftpboot
# The boot filename, Server name, Server Ip Address
dhcp-boot=undionly.kpxe,,10.0.253.24
# rootpath option, for NFS
#dhcp-option=17,/images
# kill multicast
#dhcp-option=vendor:PXEClient,6,2b
# Disable re-use of the DHCP servername and filename fields as extra
# option space. That's to avoid confusing some old or broken DHCP clients.
dhcp-no-override
# PXE menu. The first part is the text displayed to the user. The second is the timeout, in seconds.
pxe-prompt="Press F8 for boot menu", 3
# The known types are x86PC, PC98, IA64_EFI, Alpha, Arc_x86,
# Intel_Lean_Client, IA32_EFI, BC_EFI, Xscale_EFI and X86-64_EFI
# This option is first and will be the default if there is no input from the user.
pxe-service=X86PC, "Boot from network", undionly
# A boot service type of 0 is special, and will abort the
# net boot procedure and continue booting from local media.
#pxe-service=X86PC, "Boot from local hard disk", 0
# If an integer boot service type, rather than a basename is given, then the
# PXE client will search for a suitable boot service for that type on the
# network. This search may be done by multicast or broadcast, or direct to a
# server if its IP address is provided.
# pxe-service=x86PC, "Install windows from RIS server", 1
# This range(s) is for the public interface, where dnsmasq functions
# as a proxy DHCP server providing boot information but no IP leases.
# Any ip in the subnet will do, so you may just put your server NIC ip here.
# Since dnsmasq is not providing true DHCP services, you do not want it
# handing out IP addresses. Just put your servers IP address for the interface
# that is connected to the network on which the FOG clients exist.
# If this setting is incorrect, the dnsmasq may not start, rendering
# your proxyDHCP ineffective.
dhcp-range=10.0.253.24,proxy
# This range(s) is for the private network on 2-NIC servers,
# where dnsmasq functions as a normal DHCP server, providing IP leases.
# dhcp-range=192.168.0.20,192.168.0.250,8h
# For static client IPs, and only for the private subnets,
# you may put entries like this:
# dhcp-host=00:20:e0:3b:13:af,10.160.31.111,client111,infinite
dhcp-host=f8:0f:41:a0:04:75,net:allow
dhcp-ignore=#allow
MOD Edit: Added code block for readability
Corporation
i5-3470S CPU @ 2.90GHz