[Pdns-users] forward /28 subnet form inside of a /24 reverse zone

[Athiqur Rahman]

Since i want the 224/28 subnet to be forwarded to another name server 
and the rest of the ip address in the /24 to be answered by my own name 
server could i do something like this?

79.73.217.in-addr.arpa:

    IN   NS    ns1.myserver.com  // this is the NS for all the IP in 
that range that my name server will answer
    IN   NS    ns2.myserver.com

224/28    IN    NS    ns1.otherserver.com. // this /28 subnet will not 
be answered by my name server but another server
224/28    IN    NS    ns1.otherserver.com.

Or do i have to define every other ip as part of a subnet which is 
smaller then /24?


Imre Gergely wrote:
>
> The rest of the IP addresses (outside that /28) you can define with 
> PTR in the normal way, whenever you like. It's not necessary to define 
> them all, if they don't have a PTR record, that's alright.
>
> So in your zone file on your 2 namservers you'll have
>
> 224/28    IN    NS    ns1.otherserver.com.
> 224/28    IN    NS    ns1.otherserver.com.
>
> 26    IN    PTR    foo1.example.com.
> 27    IN    PTR    foo2.example.com.
> 28    IN    CNAME    28.224/28.79.73.217.in-addr.arpa.
> 29    IN    CNAME    29.224/28.79.73.217.in-addr.arpa.
> [..]
> 43    IN    CNAME    43.224/28.79.73.217.in-addr.arpa.
> 44    IN    PTR    foo3.example.com.
>
> You only have to have the CNAMEs for _all_ the IP addresses in that 
> /28 subnet, because you want to delegate them all to the other 
> nameserver.
>
> On 03/25/2010 06:50 PM, Athiqur Rahman wrote:
>> Looking at the link below. It looks like that I will have to create
>> CNAME entry for every IP in the /28 subnet, That is 16 CNAME entries?
>> The nameserver that I am sending to will have to create a zone record
>> called 224/28.79.73.217.in-addr.arpa?
>>
>> I am thinking do I have to define the rest of the IP addreses or will
>> just simple defining that one /28 be enough? Will the rest of the IP
>> addresses fall into the umbrella of the main NS definition in the zone
>> record?
>>
>> Imre Gergely wrote:
>>>
>>> You mean delegating a subnet to another nameserver? This may help:
>>>
>>> http://www.zytrax.com/books/dns/ch3/#reverse
>>>
>>> On 03/25/2010 05:53 PM, Athiqur Rahman wrote:
>>>> Hi,
>>>>
>>>> I have the following zone 79.73.217.in-addr.arpa with the NS set as 
>>>> my 2
>>>> name servers.
>>>>
>>>> What i want to do is just forward reverse dns requests for
>>>> 217.73.79.224/28 to another name server. What would be the best way to
>>>> go about this?
>>>>
>>>> Thanks
>>>> _______________________________________________
>>>> Pdns-users mailing list
>>>> Pdns-users at mailman.powerdns.com
>>>> http://mailman.powerdns.com/mailman/listinfo/pdns-users
>>>>
>>>
>>
>>
>