NO DHCP OFFERS RECEIVED when installing from sysimager !!!

[HP-UX_Ali]

Hi Experts,

I´m having some problems while installing RHEL 6 using sysimager in New G7 Blade server and I hope you could give me some Hint.

Issue : The server boots normally within the PXE, detects the DHCP, receive the ram disk image from the tftp and once it has boot almost completely starts to try to locate the dhcp server again looking for an ip for the nic. The problem, and it´s really amazing for me is that the server tries to locate the dhcp throught the loopback. The message is the following:

DHCPDISCOVER on lo to 255.255.255.255 port 67 interval x (it repeats some times the same message)
NO DHCP OFFERS RECEIVED
No working leases in persistent detabase - sleeping.
I couldn´t configure the network interface using DCHP
Killing off running processes

... and Hang.. !!!

NOTE: Just for your info, Sysimager is of old version.
I guess, does it requires drivers for new nic in G7 blade which to place in /my_modules in directory path of sysimager. if so how to place and recieve the drivers.

Thanks , your prompt answer will be highly appreciated.
Regards
Ali.......