Re: notify and views

On Jan 13, 2005, at 8:08 AM, Jukka Salmi wrote:

> I'm running BIND 9.3.0 (installed from pkgsrc) on two NetBSD 2.0 i386
> systems. Both systems run a authoritative only (master and slave) and
> a caching only server. The master has two views defined (one for
> internal
> and one for external queries).
....
> So far so good, the internal view on the slave is up to date now. But
> then,
> instead of updating the external view as well, the slave tries to
> update
> the internal view again (this happens immediately after the successful
> transfer shown above; see the timestamps):

This is related to how a system can function as a master for both an
internal and external view and insure that zone transfers to a slave
function properly. This is answered in the FAQ that comes with the
BIND sources, and is found in the top level directory.

Q: How can I make a server a slave for both an internal and
an external view at the same time? When I tried, both views
on the slave were transferred from the same view on the master.

A: You will need to give the master and slave multiple IP addresses and
use those to make sure you reach the correct view on the other machine.

An example setup is also included. Take a look at this document. The
example is very well written.

This handles master and slave zone transfers. Since you are only
worrying about an internal view on your slave, this configuration can
be simplified by ignoring the external zone on your internal only
server.

To deal with your NOTIFY problem I think that you may need to add
"notify-also" to the zone definitions for your internal and external
zones. These will need to specify the internal and external addresses
for your master to insure that the notify packet gets to the correct
location. I'm not sure how to handle the NOTIFY that will be sent to
the primary master, maybe someone else has an idea.

Bill Larson