[nsd-users] Prevent name compression on some RR types?

[Matthijs Mekking]

In fact, we implemented it and these ILNP RR types will be supported by
the next NSD release (and also by the next ldns release).

Best regards,
  Matthijs

On 11/19/2012 10:34 AM, Matthijs Mekking wrote:
> On 11/17/2012 11:05 AM, Stephane Bortzmeyer wrote:
>> RFC 6742, section 2.4.1.2, says:
>>
>>> A sender MUST NOT use DNS name compression on the FQDN field when
>>> transmitting an LP RR.
>>
>> I do not see how to implement this with NSD 3. When I call
>> zadd_rdata_domain() in zparser.y, there is apparently no option to
>> register in the compiled zone database the fact that this must not be
>> compressed. As a result, the name is compressed, violating the RFC.
> 
> There is: RDATA formats in NSD are registered in dns.c. There is a table
> of RRs, describing each RDATA formats. For LP, this would be:
> 
> { RDATA_WF_SHORT, RDATA_WF_UNCOMPRESSED_DNAME }
> { RDATA_ZF_SHORT, RDATA_ZF_DNAME }
> 
>> Such a rule seems to have been present only for DNSSEC-related RR
>> types until now. These DNSSEC RR types have a special handling in the
>> name server but I find nothing for other types.
> 
> This new RR type is perfectly following RFC 3597, Handling of Unknown
> DNS RR Types:
> 
>    Future specifications for new RR types that contain domain names
>    within their RDATA MUST NOT allow the use of name compression for
>    those names, and SHOULD explicitly state that the embedded domain
>    names MUST NOT be compressed.
> 
> Best regards,
>   Matthijs
> 
>>
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>>
> 
> 
> 
> 
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