Funny cache records

[Ladislav Vobr]

Barry Margolin wrote:

>>$ORIGIN msn.COM.
>>;help	243	IN	SOA	localhost. postmaster.localhost. (
>>;		2002100100 3600 1800 604800 3600 );msn.com.;NXDOMAIN	;-$	;Cr=auth 
>>[206.13.29.12]
>>www	2376	IN	SOA	localhost. postmaster.localhost. (
>>		2002100100 3600 1800 604800 3600 )	;Cr=auth [206.13.29.12]
>>;	2376	IN	A	localhost. postmaster.localhost. (
>>;		2002100100 3600 1800 604800 3600 );www.msn.com.;NODATA	;-$	;Cr=auth 
>>[206.13.29.12]
> 
> 
> The entries marked ";-$" are negative cache entries.  The "IN A" 
> indicates that this is the type of record that could not be found; the 
> rest of the data is from the SOA record for the containing zone.
> 
> I can't explain where these bogus cache entries came from, though.  When 
> I query 206.13.29.12 (dns1.lsanca.sbcglobal.net) it appears to know that 
> www.msn.com is delegated to various msft.net servers, and it knows the 

I have asked some time back im bind-ml, why the referencing parent DNS 
server information is not available anymore in the bind9.2.2 dump_db, or 
perhaps I just couldn't discover it? I believe it is very useful in 
troubleshooting daily cases similar to this.

Ladislav