I am trying to pxe-boot a machine (client), and in the process I am trying to setup a tftp server that this machine can boot off.

On the server, which runs Ubuntu 10.10, I have setup dhcp, dns, nfs, and tftp-hpa servers. All the servers/deamons start fine. I tested the tftp server by using a tftp client and downloading a file that the server directory hosts.

My /etc/xinet.d/tftp looks like this

service tftp
{
    disable                 = no
    socket_type             = dgram
    wait                    = yes
    user                    = nobody
    server                  = /usr/sbin/in.tftpd
    server_args             = -v -s /var/lib/tftpboot
    only_from   = 10.1.0.0/24
    interface   = 10.1.0.1
}

My /etc/default/tftpd-hpa looks like this

RUN_DAEMON="yes"
OPTIONS="-l -s /var/lib/tftpboot"
TFTP_USERNAME="tftp"
TFTP_DIRECTORY="/var/lib/tftpboot"
TFTP_ADDRESS="0.0.0.0:69"
TFTP_OPTIONS="--secure"

My /var/lib/tftpboot/ directory looks like this

 initrd.img-2.6.35-25-generic-pae
 vmlinuz-2.6.35-25-generic-pae
 pxelinux.0
 pxelinux.cfg
   -- default

I did

 sudo chmod 644 /var/lib/tftpboot/pxelinux.cfg/default
 chmod 755 /var/lib/tftpboot/initrd.img-2.6.35-25-generic-pae
 chmod 755 /var/lib/tftpboot/vmlinuz-2.6.35-25-generic-pae

/var/lib/tftpboot/pxelinux.cfg has the following contents

 SERIAL 0 19200 0
 LABEL linux
 KERNEL vmlinuz-2.6.35-25-generic-pae
 APPEND root=/dev/nfs initrd=initrd.img-2.6.35-25-generic-pae nfsroot=10.1.0.1:/nfsroot ip=dhcp console=ttyS0,19200n8 rw

I copied /var/lib/tftpboot/pxelinux.0 from /usr/lib/syslinux/ after installing the package syslinux-common.

Also just for completeness, /etc/dhcp3/dhcpd.conf the following lines (relevant to this interface)

subnet 10.1.0.0 netmask 255.255.255.0 {
  range 10.1.0.100 10.1.0.240;
  option routers 10.1.0.1;
  option broadcast-address 10.1.0.255;
  option domain-name-servers 10.1.0.1;
  filename "pxelinux.0";
}

When I boot the client machine, and watch the output over the serial port, I notice that the client requests an ip address from the server and gets it. Then I see TFTP being displayed - indicating that it is trying to connect to the TFTP server. This succeeds, and I see TFTP.|, which return immediately displaying the following message

PXELINUX 4.01 debian-20100714  Copyright (C) 1994-2010 H. Peter Anvin et al
No DEFAULT or UI configuration directive found!
boot: 

/var/log/syslog shows

Feb 20 15:24:05 ch in.tftpd[2821]: tftp: client does not accept options

What option is it talking about in the syslog? I assume it is referring to OPTIONS or TFTP_OPTIONS, but what am I doing wrong?