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-   -   DHCP Offer is not a broadcast traffic when using a DHCP Relay, why? (http://www.linuxquestions.org/questions/linux-networking-3/dhcp-offer-is-not-a-broadcast-traffic-when-using-a-dhcp-relay-why-713316/)

jayadhanesh 03-21-2009 05:00 AM

DHCP Offer is not a broadcast traffic when using a DHCP Relay, why?
 
Hi,
I use a DHCP relay to forward the DHCP packets from a FC 4 system to
the DHCP server running on a FC 4 system, 2.6.11. The agent gets the
DHCP discover message and adds the relay agent information and sends to the
DHCP server. I get the DHCP offer from the server which is a Unicast
packet to the IP that will be assigned to the client. Generally the
DHCP offer will be a broadcast message. Will the server send a Unicast
Offer message because of using a Relay? Because the destination IP
is not the IP of the relay, the relay is not processing the packet.

Thanks,
Dhanesh.

farslayer 03-23-2009 09:17 AM

Have you read rfc1542 ? http://www.ietf.org/rfc/rfc1542.txt

sections 3.1.1 and 4.1.2


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