# ls /var/lib/tftpboot/ -R
/var/lib/tftpboot/:
menu.c32  pxelinux.0  pxelinux.cfg  sl6

/var/lib/tftpboot/pxelinux.cfg:
default

/var/lib/tftpboot/sl6:
initrd.img  vmlinuz

# cat /var/lib/tftpboot/pxelinux.cfg/default
timeout 100
default menu.c32
menu title ########## PXE Boot Menu ##########
label 1
   menu label ^1) Install Scientific Linux 6
   kernel sl6/vmlinuz
   append initrd=sl6/initrd.img method=http://10.0.2.51/sl6 devfs=nomount
label 2
  menu label ^2) Boot from local drive
  localboot

no-resolv
no-poll
interface=eth2
domain=hpclab
expand-hosts
dhcp-range=10.0.2.52,10.0.2.100,static
dhcp-option=42,0.0.0.0
dhcp-boot=pxelinux.0
enable-tftp
tftp-root=/var/lib/tftpboot
dhcp-host=08:00:27:69:73:7A,ws04,10.0.2.52

# dnsmasq -d
dnsmasq: started, version 2.48 cachesize 150
dnsmasq: compile time options: IPv6 GNU-getopt DBus no-I18N DHCP TFTP "--bind-    interfaces with SO_BINDTODEVICE"
dnsmasq: warning: no upstream servers configured
dnsmasq-dhcp: DHCP, IP range 10.0.2.52 -- 10.0.2.100, lease time 2m
dnsmasq-tftp: TFTP root is /var/lib/tftpboot
dnsmasq: read /etc/hosts - 2 addresses

CLIENT MAC ADDR: 08 00 27 69 73 7A  GUID: EF720459-193C-4558-8C46-15FF790FCD1C
PXE-E51: No DHCP or proxyDHCP offers were received