Re: IQuery Transaction ID

>>>>> "Vince" == Vince Tam <vince.tam@cgi.com> writes:

Vince> Greetings, I have a question with regards to how the
Vince> Transaction ID is generated for an Inverse Query. Is the
Vince> Transaction ID supposed to be "/09/80" for all versions of
Vince> BIND for every transaction or should it vary for each
Vince> transaction?

Inverse queries are obsolete. See RFC3425. BIND9 does not support
them. Nothing should be using inverse queries, apart from ancient,
idiot software -- ie some versions of nslookup -- that should have
been replaced ages ago. There is no document which mandates any DNS
query should have a specific ID. In fact it would be very silly to do
that. The ID field is to allow the client to match a reply to the
corresponding query. If the client had a number of outstanding queries
all sharing the same ID, deciding which reply matched which of those
queries could be interesting.