[Possible OT]: dns id in requests

[Barry Margolin]

In article <ch7mh6$1f4a$1 at sf1.isc.org>,
 Ramnath Duggirala <ramnath802 at yahoo.com> wrote:

> Hi All,
>   I have noticed that the corporate dns server is
> sending out dns requests with same id but different
> udp src port for consecutive requests. I was under the
> impression that the "dns_id must be different for
> requests from hostA to serverB as they are used to
> match requests with responses. The udp src port can be
> same for consecutive requests(this from earlier
> discussions on bind in this forum)".

Since it's using the port number to match the replies with requests, it 
doesn't need to distinguish them using the ID field.  So this field is 
irrelevant for this client.

Why does it matter?

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