"not mine" messages

Sten Carlsen sten at s-carlsen.dk
Mon Jun 11 17:39:43 UTC 2007


Just a wild guess:
Could they alternating connect to your server and the server in the
network in the next building? Could they then carry the wrong IP back
and ask for renewal of that?


Per olof Ljungmark wrote:
> 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;
>                  }
> }
>
>
>   

-- 
Best regards

Sten Carlsen

No improvements come from shouting:

       "MALE BOVINE MANURE!!!" 



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