NODATA

[Kevin Darcy]

You'd need to query a name that owned records of other types, but not an 
A record. On the Internet, you could query the (obsolete) name 
ra.chrysler.com. It only owns an MX record.

- Kevin
Watanabe, Hiroshi wrote:

>Hi Kevin,
>Thank you for your reply.
>
>I could get NODATA with SRV record. (I'm using BIND8.2.2-p5)
>But if I remove A record and query, I couldn't find NODATA of A record
>on memory.
>How can I get the NODATA with A record.
>
>Thanks
>Hiroshi
>
>-----Original Message-----
>From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org] On
>Behalf Of Kevin Darcy
>Sent: Tuesday, April 12, 2005 8:38 AM
>To: bind-users at isc.org
>Subject: Re: NODATA
>
>Watanabe, Hiroshi wrote:
>
>  
>
>>Hi all,
>>
>>I found the record on my cache server memory like this:
>>
>>;	3547	IN	A	[master]  [postmaster] (
>>;		2005030701 10800 3600 604800 3600 );xxx.co.jp.;NODATA
>>;-$	;Cr=3D3Dauth [xxx.xxx.xxx.xxx]
>>
>>There is "NODATA" key word.
>>I want to know how can I get the simular record including NODATA on my=20
>>test machine.
>>In other words, I want to know the conditions for making NODATA record.
>>
>>    
>>
>Pick a name. Query for that name, with a record type that you know the
>name doesn't own. For instance, if you know you have no HINFO records
>for a particular name that "exists" (i.e. it owns records of some
>*other* type(s)), query the name with record type HINFO. You should get
>a response with RCODE=3DNOERROR, 0 answers and no referral records in =
>the
>Authority Section, i.e. what is commonly known as a NODATA response.=20
>Modern versions of BIND will know to cache such "negative" responses.=20
>See RFC 2308 for more details.
>
>- Kevin
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