TTL when updating via DDNS

[Marc Muehlfeld]

Glenn Satchell schrieb:
> If you have hosts being deleted from the zone file then you have a
> different problem. Are your clients successfully renewing their leases?
> Are there any log messages indicating that dhcpd asked for the zone
> entry to be deleted? Is there anything related to this inthe (I assume)
> bind  logs?

dhcpd.log (without any other messages of this computer before and after):
Jul  9 13:19:21 nucleus dhcpd: delete 179.0.1.10.in-addr.arpa. IN PTR: success.
Jul  9 13:19:21 nucleus dhcpd: delete proben-05.clt.mr.lfmg.de IN A 
10.1.0.179: success.


This are the named log entries that appear at the same time:
09-Jul-2008 13:19:21.000 update: info: client 192.168.29.2#33018: updating 
zone '0.1.10.in-addr.arpa/IN': deleting rrset at '179.0.1.10.in-addr.arpa' PTR
09-Jul-2008 13:19:21.049 update: info: client 192.168.29.2#33018: updating 
zone 'clt.mr.lfmg.de/IN': deleting an RR




> Can you please post your dhcpd config file (or a reasonable example if
> it is huge).

This are just the global options and one subnet declaration of my dhcpd.conf:



ignore client-updates;
ddns-update-style ad-hoc;
update-static-leases true;
ddns-domainname "mydomain.tld";

key DHCP_UPDATER  { algorithm HMAC-MD5.SIG-ALG.REG.INT; secret ............; };

zone mydomain.tld  .            { primary 192.168.29.2; key DHCP_UPDATER; }
zone 0.1.10.in-addr.arpa.       { primary 192.168.29.2; key DHCP_UPDATER; }

authoritative;

one-lease-per-client true;

log-facility local7;

# Default lease time is 5 days
default-lease-time 432000;

# Maximum lease time is 6 days
max-lease-time 518400;

option domain-name-servers 192.168.29.2, 192.168.29.4;
option netbios-name-servers 192.168.29.4;


subnet 10.1.0.0 netmask 255.255.255.0 {

         option domain-name "mydomain.tld";
         option broadcast-address 10.1.0.255;
         option routers 10.1.0.5;

         # IT-Hosts with fix IPs via DHCP (10.1.0.240/28)
         pool {
                 range 10.1.0.241
                 deny unknown-clients;
                 host it-01 { hardware ethernet 00:18:F3:08:B0:42; 
fixed-address 10.1.0.254; }
         }

         # Printer with fix IPs via DHCP (10.1.0.16/28)
         pool {
                 range 10.1.0.17;
                 deny unknown-clients;
                 host ZETLP2844-9  { hardware ethernet 00:17:9A:AE:38:F0; 
fixed-address 10.1.0.25; }
         }

         # All other DHCP clients
         pool {
                 range 10.1.0.100 10.1.0.200;
         }

}