Dear Matus / Tony, I understand your point.
It is good practice to be authoritative for non routing prefixes so queries are not sended outside. About RFC 1918 , I understand it is necessary to provide reverse mapping for non - internet routing prefixes as described here:
http://archive.oreilly.com/pub/a/sysadmin/2007/04/26/5-basic-mistakes-not-to-make-in-dns.html?page=1
My idea for this is to add an empty zone for the 192.168.0.0/16, 172.16.0.0/12, and 10.0.0.0/8 prefixes. In my case my local network is configured on 10.0.0.0/24 so I will also set a zone for this.

For RFC /3330/5735  can not find information. Could you provide?

I have also included zones for RFC1912 (they were already on the named.conf template) with deals with loopback resolution and reverse mapping.
Other question :
For an ISP , is it mandatory to provide reverse mapping for the public prefixes I have assigned?

Thanks in advance,
Leandro.



On 07/07/15 05:29, Matus UHLAR - fantomas wrote:
On 06.07.15 16:39, Leandro wrote:
3)Does it have any drawbacks no declaring any zone file in the long term?

you should declare at least RFC 1918/3330/5735 reverse zones, to prevent
from forwarding queries to root servers.


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