Shared Network Question

Clayton Keller inetadmin at
Mon Aug 6 15:29:54 UTC 2007

I have a setup in which a DHCP request is coming in from a Relay Agent 
IP address of, however, I'd like to assign it an address 
from a subnet.

My understanding was I could use a shared-network to handle this type of 
situation. We are also looking at using some Option 82 info as well.

Here is my configuration for the shared network:

shared-network Lab
         subnet netmask

         class "Test"
                 match if option agent.circuit-id = "XXXX";

         subnet netmask
                 default-lease-time 1800;
                 max-lease-time 3600;
                 option routers;
                 option broadcast-address;

                         failover peer "failover";
                         deny dynamic bootp clients;
                         allow members of "XXXX";

When I have this config loaded on both dhcpd servers, the following 
response is seen from the logs when the discover packet is received.

dhcpd: DHCPDISCOVER from xx:xx:xx:xx:xx:xx via peer holds 
all free leases

I'm not sure if I'm not setting this up properly, or if this is a viable 
option to the setup we are working with regarding the incoming traffic.

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