Split-DNS (views) - slave sending updates to itself

[Ewald Jenisch]

Hi,

After getting up my split-DNS using views and TSIG (thanks to all who
responded) I run into a, let's say "weird behavior":

Whenever I receive a zone-update for the external zone on the slave,
it (the slave) seems to send out a notify for the zone in question via
the internal view to itself - i.e. the slave notifies itself of the
update.

Here's what I get in the log on the slave server:

08-Jul-2011 13:10:52.322 client 192.168.5.61#55119: view external-view: received notify for zone 'v6.test.at': TSIG 'ns1-and-ns2-external'
08-Jul-2011 13:10:52.325 transfer of 'v6.test.at/IN/external-view' from 192.168.5.61#53: connected using 192.168.5.62#11464
08-Jul-2011 13:10:52.430 transfer of 'v6.test.at/IN/external-view' from 192.168.5.61#53: Transfer completed: 1 messages, 10 records, 423 bytes, 0.105 secs (4028 bytes/sec)
08-Jul-2011 13:10:52.430 zone v6.test.at/IN/external-view: sending notifies (serial 2011070810)
08-Jul-2011 13:10:52.822 client 2001:db8:2208:1005::10#51736: view external-view: received notify for zone 'v6.test.at': TSIG 'ns1-and-ns2-external'
08-Jul-2011 13:10:52.836 client 192.168.5.62#61706: view internal-view: received notify for zone 'v6.test.at'
08-Jul-2011 13:10:52.836 client 2001:db8:2208:1005::11#61962: view internal-view: received notify for zone 'v6.test.at'

with 192.168.5.61 (IPv6 2001:db8:2208:1005::10) being the master,
192.168.5.62 (IPv6 2001:db8:2208:1005::11) being the slave.

So if my interpretation from the above log is correct the slave
receives the update from the master for the external-view up and
including the line that says "client 2001:db8:2208:1005::10#51736:
view external-view: received notify for zone 'v6.test.at': TSIG
'ns1-and-ns2-external'".

What follows though is really weird:
08-Jul-2011 13:10:52.836 client 192.168.5.62#61706: view internal-view: received notify for zone 'v6.test.at'
08-Jul-2011 13:10:52.836 client 2001:db8:2208:1005::11#61962: view internal-view: received notify for zone 'v6.test.at'

Why by all means does the slave send out a notify to itself?


Any clues on what's going on here?

Thanks much in advance for your help,
-ewald