PXEBOOT confsued by dhcrelay -- two gids ?

[Robinson Tiemuqinke]

Hi,

 My Broadcom gigabit NIC's PXEBOOT was confsued by ISC
dhcrelay. it interpreted the DHCP OFFER as having two
gid IPs: First is the IP of DHCRELAY server, then
comes the real router IP defined in dhcpd.conf.

The above bring big trouble to me b/c I have to
install hundreds of Linux clients based on pxeboot.
originally we didn't encounter this problems becasuse
we had only one big flat network, but now we has tens
of small networks to improve security while on routers
the DHCP broadcast are blocked. 

Any other people encountered the same problem before?
the Broadcom gigabit NICs' booting firware version is
6.2.0, and has a PCI ID 14e4:16a6 (rev 02). 

my dhcpd and dchrelay is a little bit old, their
version is V3.0pl2.

Please help. Thanks a lot.

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