doubt regarding Caching server Implementation....

[Barry Margolin]

In article <dn49o6$17un$1 at sf1.isc.org>,
 Sanjib Das <Sanjib.Das at lntinfotech.com> wrote:

> Hi
> I have setup a local domain my.domain. & it consists of two machines...
> I configured one of them as primary server for my domain & another one
> as caching server .For both these servers I'm using BIND-9.2.4 package
> whenever I send query (using 'dig' command).....
> from the second machine (machine where the caching server is running 
> locally) first it looks into its own cache....if its available it sends 
> from there 
> itself... otherwise sends it to the primary server...now whenever it 
> (caching 
> server)sends to primary server.
> 
> Say I sent a query dig A.example.com. A  .... say the caching server
> does not have the information in its own cache...so it sends to the 
> primary server...now if I run tcpdump...I find that the caching server
> not only sends the query for qtypw=A...it sends the same for qtype=NS, 
> qtype=PTR...but in my query I only asked for qtype=A .....
> I donno exactly why it sends two more queries, which I dint send.....

I've never seen this, I think you might be misreading something.  Can 
you post the actual tcpdump output?  And please don't obscure the 
domains (don't replace the real domain with "example.com"), it just 
confuses things.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***