The way I solved the problem was this:
Modify /etc/dhcpd.conf
I added this section to this file
}
host ws253 {
hardware ethernet 00:A0
2:1C:82:E1;
fixed-address 192.168.0.253;
filename "/lts/vmlinuz-2.4.24-ltsp-4";
option option-128 e4:45:74:68:00:00;
# option option-129 "NIC=rtl8139"; <-------This part is commented out in order to work
}
Since the system identified the first terminal that I connected to the server as 192.168.0.253, I changed the address on fixed-address to match, also I had to add the MAC address to the hardware ethernet, then typed the command
service dhcpd restart
Restarted the terminal and voila the floppy works on the terminal.
Hope this is usefull for you