[syslinux] 3com 3c905b - pxe boot failure

[Emir Imamagic]

Hi,

I'm trying to boot a clean machine(hostname=dgrid-5.srce.hr) with 3com 
3c905b NIC (ver4.30 MBA) with pxe.
Server:
    hostname: dgrid-1.srce.hr
    pxelinux.0: syslinux-2.08
    tftp: tftp-hpa-0.36
    dhcp server: dhcp-2.0pl5-8
Client:
    boot option: DHCP

Client machine successfully gets pxelinux.0 and then everything 
stops(see listing below).
I've tried with xinetd-2.3 and syslinux 1.76, but the result is always 
the same.
I'm quite sure that the problem is in my configuration somewhere,

thanx in advance

emir

------------------------------------------------------------------------------------------
Output on client:
Managed PC Boot Agent (MBA) v 4.30
(C) Copyright 2000 Lanworks Technologies Corporation a subsidiary of 
3Com Corporation

Node 000475F7DB60
DHCP ...............
TFTP  ...............
------------------------------------------------------------------------------------------
Part of dhcpd.conf:
allow booting;
allow bootp;

deny unknown-clients;
not authoritative;

option dhcp-class-identifier "PXEClient";
option vendor-encapsulated-options 01:04:00:00:00:00:ff;
next-server dgrid-1.srce.hr;
filename "pxelinux.0";
------------------------------------------------------------------------------------------
Here's tcpdump on server:
12:36:00.288749 dgrid-1.srce.hr.bootps > 255.255.255.255.bootpc:  
xid:0x70639e9a secs:33 Y:dgrid-5.srce.hr S:dgrid-1.srce.hr ether 
0:4:75:f7:db:60 file ""[|bootp] (DF)
12:36:07.209037 dgrid-1.srce.hr.bootps > 255.255.255.255.bootpc:  
xid:0x70639e9a secs:33 Y:dgrid-5.srce.hr S:dgrid-1.srce.hr ether 
0:4:75:f7:db:60 file ""[|bootp] (DF)
12:36:08.198380 arp who-has dgrid-1.srce.hr tell dgrid-5.srce.hr
12:36:08.201138 dgrid-5.srce.hr.32724 > dgrid-1.srce.hr.tftp:  32 RRQ 
"pxelinux.0"
12:36:08.212524 dgrid-1.srce.hr.36452 > dgrid-5.srce.hr.32724:  udp 15 (DF)
12:36:08.212618 dgrid-5.srce.hr.32724 > dgrid-1.srce.hr.36452:  udp 4
12:36:08.212906 dgrid-1.srce.hr.36452 > dgrid-5.srce.hr.32724:  udp 1454 
(DF)
12:36:08.213261 dgrid-5.srce.hr.32724 > dgrid-1.srce.hr.36452:  udp 4
12:36:08.213322 dgrid-1.srce.hr.36452 > dgrid-5.srce.hr.32724:  udp 1454 
(DF)
12:36:08.215142 dgrid-5.srce.hr.32724 > dgrid-1.srce.hr.36452:  udp 4
12:36:08.215195 dgrid-1.srce.hr.36452 > dgrid-5.srce.hr.32724:  udp 1454 
(DF)
12:36:08.215544 dgrid-5.srce.hr.32724 > dgrid-1.srce.hr.36452:  udp 4
12:36:08.215587 dgrid-1.srce.hr.36452 > dgrid-5.srce.hr.32724:  udp 1454 
(DF)
12:36:08.215939 dgrid-5.srce.hr.32724 > dgrid-1.srce.hr.36452:  udp 4
12:36:08.215982 dgrid-1.srce.hr.36452 > dgrid-5.srce.hr.32724:  udp 1454 
(DF)
12:36:08.216339 dgrid-5.srce.hr.32724 > dgrid-1.srce.hr.36452:  udp 4
12:36:08.216382 dgrid-1.srce.hr.36452 > dgrid-5.srce.hr.32724:  udp 1454 
(DF)
12:36:08.216731 dgrid-5.srce.hr.32724 > dgrid-1.srce.hr.36452:  udp 4
12:36:08.216774 dgrid-1.srce.hr.36452 > dgrid-5.srce.hr.32724:  udp 1454 
(DF)
12:36:08.217117 dgrid-5.srce.hr.32724 > dgrid-1.srce.hr.36452:  udp 4
12:36:08.217161 dgrid-1.srce.hr.36452 > dgrid-5.srce.hr.32724:  udp 1454 
(DF)
12:36:08.217510 dgrid-5.srce.hr.32724 > dgrid-1.srce.hr.36452:  udp 4
12:36:08.217552 dgrid-1.srce.hr.36452 > dgrid-5.srce.hr.32724:  udp 124 (DF)
12:36:08.217861 dgrid-5.srce.hr.32724 > dgrid-1.srce.hr.36452:  udp 4
12:36:13.206927 arp who-has dgrid-5.srce.hr tell dgrid-1.srce.hr
12:36:14.206924 arp who-has dgrid-5.srce.hr tell dgrid-1.srce.hr
12:36:15.206915 arp who-has dgrid-5.srce.hr tell dgrid-1.srce.hr
12:36:16.206913 arp who-has dgrid-5.srce.hr tell dgrid-1.srce.hr
12:36:17.206920 arp who-has dgrid-5.srce.hr tell dgrid-1.srce.hr
12:36:18.206914 arp who-has dgrid-5.srce.hr tell dgrid-1.srce.hr
------------------------------------------------------------------------------------------
Syslog on server:
dgrid-1 dhcpd: DHCPDISCOVER from 00:04:75:f7:db:60 via eth0
dgrid-1 dhcpd: DHCPOFFER on 161.53.1.231 to 00:04:75:f7:db:60 via eth0
dgrid-1 dhcpd: DHCPREQUEST for 161.53.1.231 from 00:04:75:f7:db:60 via eth0
dgrid-1 dhcpd: DHCPACK on 161.53.1.231 to 00:04:75:f7:db:60 via eth0
dgrid-1 in.tftpd[7596]: RRQ from 161.53.1.231 filename pxelinux.0