Negative zones; NXDOMAIN responses

Phil Mayers p.mayers at imperial.ac.uk
Tue May 21 07:39:07 UTC 2013


On 05/21/2013 08:23 AM, Matus UHLAR - fantomas wrote:
> On 21.05.13 11:03, Mark Andrews wrote:
>>     The simplest solution is to slave the root zone and
>>     turn off notify to so you don't spam the official
>>     root servers.  192.5.5.241 is f.root-servers.net.
>>
>> zone "." IN {
>>        type slave;
>>        file "slave/root";
>>        masters { 192.5.5.241; };
>>        notify no;
>> };
>
> I thought this is not oficially recommended for ordinary users to prevent
> root servers from being overloaded (transfers use much more resources than
> ordinary lookups). Has this changed?

ICANN run a specifc AXFR service for various infrastructure zones:

http://dns.icann.org/services/axfr/

...which IIRC some configs for root-slaving (FreeBSD?) use by default.


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