Mine

ddns-update-style ad-hoc;
allow booting;
allow bootp;
option option-128 code 128 = string;
option option-129 code 129 = text;


subnet 172.16.11.0 netmask 255.255.255.0 {
        default-lease-time            21600;
        max-lease-time                21600;
        option routers                  172.16.11.250;
        option subnet-mask              255.255.255.0;
        option broadcast-address        172.16.11.255;

        option domain-name              "smith.ipmvs.com";
        option domain-name-servers      10.0.0.1, 10.1.1.2, 209.234.64.192;
        option time-servers             10.0.0.13;
        option ntp-servers              10.0.0.13;
        option netbios-name-servers     10.0.0.1, 10.1.1.2;
        option netbios-node-type        8; #WINS then broadcast
        option smtp-server              10.1.1.2;
        option root-path                "172.16.11.4:/opt/ltsp/i386";
        next-server                     172.16.11.4;


        option time-offset              -19000;     # Eastern Standard Time
        use-host-decl-names       on;
        option log-servers        172.16.11.4;    # trick from Peter Rundle <peter.rundle@au.interpath.net>
     if substring (option vendor-class-identifier, 0, 9) = "PXEClient"
     {
        filename      "/lts/pxe/pxelinux.bin";
          # NOTE: kernels are specified in /tftpboot/lts/pxe/pxelinux.cfg/
     }
     else
     {
        filename    "/lts/vmlinuz-2.4.9-ltsp";
     }

}

        range 172.16.11.100 172.16.11.200;