CIDR problems?

Sean Kelly smkelly at rooster.creighton.edu
Thu Nov 2 15:37:57 UTC 2006


We're using ISC DHCPd V3.0.3 and just threw a new shared-net into DHCP and got a rather 
unexpected error.

We added:

shared-network "..." {
        subnet 147.147.15.224 netmask 255.255.255.224 {
                option routers 147.134.15.254;
                pool {
                        deny dynamic bootp clients;
                        failover peer "CU-ONE";
                        range 147.134.15.225 147.134.15.249;
                }
        }
}

DHCP responds to us with:

Address range 147.134.15.225 to 147.134.15.249 not on net 147.147.15.224/255.255.255.224!

Are the network guy and myself missing something, or is DHCP wrong here? Is
this a known bug?

Thanks.

-- 
Sean M. Kelly
Unix Systems Architect
Division of Information Technology
Creighton University
(402) 280-2264
AIM: smkellyg5


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