DHCPserver in LDAP objectClass=dhcpServer not available

Hi,

i would like to bind ein dhcpserver to the LDAP. I have here to systems. One Gentoo and one Ubuntu 12.04 LTS. On both systems LDAP is running without problems. So i would like to add the DHCP-Server (is on the same machine) to LDAP.

Ok, i have done this, but the DHCP-Server can't start, because there is an wrong, or not available objectclass sounds "dhcpServer". I've testet this on both maschines, and there are the same problems. So i think i've done something wrong. In the "dhcp.schema" i can find this ojectclass, but when i will add this objectclass, i can't find it to choose.

objectclass ( 2.16.840.1.113719.1.203.6.12 
        NAME 'dhcpServer' 
        DESC 'DHCP Server Object' 
        SUP top 
        MUST (cn $ dhcpServiceDN) 
        MAY (dhcpVersion $ dhcpImplementation $ dhcpHashBucketAssignment $ dhcpDelayedServiceParameter $ dhcpMaxClientLeadTime $ dhcpFailOverEndp$ 
        X-NDS_CONTAINMENT ('o' 'ou' 'dc') )

My dhcpconfig:

ldap-server "localhost"; 
ldap-port 389; 
ldap-base-dn "ou=dhcp,ou=services,dc=tux,dc=local"; 
ldap-dhcp-server-cn "192.168.2.0"; 
ldap-method dynamic; 
ldap-debug-file "/var/log/dhcp-ldap-startup.log";

When i start the dhcp-server:

Error: Cannot find LDAP entry matching (&(objectClass=dhcpServer)(cn=192.168.2.0,ou=dhcp,ou=services,dc=tux,dc=local))
Configuration file errors encountered -- exiting

And yes this entry is there, but not with this ojectclass.

Here is my ldapobject:

dn: cn=192.168.2.0,ou=dhcp,ou=services,dc=tux,dc=local 
objectClass: top 
objectClass: dhcpOptions 
objectClass: dhcpSubnet 
cn: 192.168.2.0 
dhcpNetMask: 24 
dhcpRange: 192.168.2.2 192.168.2.100 
dhcpOption: domain-name "tux.local" 
dhcpOption: domain-name-servers 192.168.2.1, 8.8.8.8 
dhcpOption: routers 192.168.2.1 
dhcpOption: netbios-name-servers 192.168.2.1 
dhcpOption: netbios-node-type 4 
dhcpOption: subnet-mask 255.255.255.0 
dhcpStatements: default-lease-time 8000 
dhcpStatements: max-lease-time 9000

What should i do to add the right ojectclass to this?