Running a packet capture on the server - do you see the DHCP
request from the client Ethernet...
Sorry, I don't know how to do that.
You can do it from the command line utilizing tcpdump (piping to other
commands to parse the data). Alternately, download Wireshark (www.wireshark.com
)
You can run Wireshark/tcp dump on the server to look for the incoming
DHCP Request packet from the client. If you see that coming in, go to
client side and make sure it receives the DHCP Offer packet.