"not mine" messages

[Per olof Ljungmark]

Niall O'Reilly wrote:
> On 6 Jun 2007, at 16:39, Per olof Ljungmark wrote:
> 
>> What I can see however, is that the "not mine" messages starts in the
>> morning and ends in the evenings.
> 
> 	I guess this is the same period when your DHCP clients are active.
> 	It so, it's not significant.

I have been devoting time to other things for a few days but now back
with this issue.

I have noted one more significant piece of information: The "not mine"
messages are *always* associated with laptops, this leads me to beliave
they connect sometimes wired and sometimes wireless, same dns name but
different MAC addresses. How's that for a guess?

Config below:

----- named.conf-----
zone "domain.tld" in {
         type master;
         file "dynamic/db.domain.tld";
         allow-transfer {
                         10.17.39.0/24;
                         10.17.41.0/24;
                         10.17.42.0/24;
                         10.17.43.0/24;
                         10.17.50.0/24;
                         127.0.0.1;
         };
         allow-query    {
                         10.0.0.0/8;
                         127.0.0.1;
         };
         allow-update   { key DHCP-UPDATE;
                         127.0.0.1;
         };
};
-----dhcpd.conf-----
authoritative;
server-identifier dns.domain.tld;
ddns-update-style interim;
ddns-rev-domainname "in-addr.arpa";
ddns-domainname "domain.tld";
allow-client-updates;
option netbios-name-servers 10.17.39.10, 10.17.39.11;
option netbios-dd-server 10.17.39.10;
option netbios-node-type 8;
shared-network UAS-STH {
         option  domain-name "domain.tld";
         option  domain-name-servers 10.17.39.11, 10.17.39.20, 10.17.41.2;
         default-lease-time 14400;
         option ntp-servers 10.17.39.2, 10.17.39.20, 10.17.42.2;
         subnet 10.17.39.0 netmask 255.255.255.0 {
         option routers 10.17.39.1;
         range 10.17.39.50 10.17.39.254;
         }


         key DHCP-UPDATE
                 {
                 algorithm HMAC-MD5;
                 secret "<key>";
                 }

         zone domain.tld
                  {
                 primary localhost;
                 key DHCP-UPDATE;
                 }

         zone 39.17.10.in-addr.arpa
                 {
                 primary localhost;
                 key DHCP-UPDATE;
                 }
}