Why my DHCPD never send DDNS updates ...

[Sébastien CRAMATTE]

Hello

I've setup DHCP3 + BIND9  on two diferents servers using dnssec key

When I do a "nsupdate" on the dhcp server  I can   add  or remove host 
on the remote DNS server without any problems.
So I suppose that my  DNSSEC key setup is ok ...
 
But my  the dhcpd daemon doesn't do his job  ...  I mean that it never
send ddns updates when  a client get a new IP
In my /var/log/syslog  I never seen DDNS updates just DHCPREQUEST and
DHCPACK

Aug 26 22:33:38 dhcp2 dhcpd: DHCPREQUEST for 192.168.0.50 from
00:16:3e:60:f0:22 (test.home) via eth0
Aug 26 22:33:38 dhcp2 dhcpd: DHCPACK on 192.168.0.50 to
00:16:3e:60:f0:22 (test.home) via eth0

I don't want that my dhcp client update dns with their own name. I would
like that dhcp generate the fqdn
I'm running DHCP 3.0.4  + BIND 9.3.4  as virtual DomU debian etch 4.0
server. The main host is a Xen 3.0.4  Dom0 

My dhcp client is a Debian Etch too ...


----- dhcpd.conf ------
ddns-update-style interim;
ddns-updates on;
deny client-updates;
authoritative;

update-static-leases on;

option domain-name-servers 192.168.0.254;

ddns-domainname "home";
ddns-rev-domainname "in-addr.arpa";
ddns-hostname = concat ("dhcp-", binary-to-ascii (10, 8, "-",
leasedaddress));

default-lease-time 600;
max-lease-time 7200;

log-facility local7;

include "/etc/dhcp3/dhcp-update.key";

subnet 192.168.0.0 netmask 255.255.255.0 {
        range 192.168.0.50 192.168.0.100;
        option routers 192.168.0.254;
        option host-name = config-option server.ddns-hostname;

        zone home.
        {
        primary 192.168.0.5;
        key DHCP-UPDATE-KEY;
        }

        zone 0.168.192.in-addr.arpa.
        {
        primary 192.168.0.6;
        key DHCP-UPDATE-KEY;
        }

}
------

Any ideas ?

May thanks for the help ...

Regards