<div dir="ltr"><div><div>Of course, anycast would have solved this issue by allowing one to add/remove a server from a properly configured environment without affecting the clients...<br><br>> On 03/01/2014 18:00, <a href="mailto:WBrown@e1b.org">WBrown@e1b.org</a> wrote:<br>
>> From: Mark Andrews <<a href="mailto:marka@isc.org">marka@isc.org</a>><br>
>>> After that specify a final date for them to fix their machines by<br>
>>> after which you will send NXDOMAIN responses. Sometimes sending a<br>
>>> poisoned reponse is the only way to get peoples attention.<br>
>>><br>
>>> zone "." {<br>
>>> type master;<br>
>>> file "empty";<br>
>>> };<br>
>>><br>
>>> empty:<br>
>>> @ 0 IN SOA . stop.using.this.nameserver 0 0 0 0 0<br>
>>> @ 0 IN NS .<br>
>>> @ 0 IN A 127.0.0.1<br>
>><br>
>> Or really mess with them and answer all A queries with 199.181.132.249<br>
><br>
> It's not a bad idea. I could wildcard all requests to an internal HTTP<br>
> server saying that the DNS configuration of the client is deprecated.<br>
><br>
><br><br></div>Regards,<br><br></div>Bob<br></div>