Re: Bind 9 AXFR Modification vs AXFR Clarification

["D. J. Bernstein" <djb@cr.yp.to>]

Mark.Andrews@isc.org writes:
> Whenever you have a parent and child zones under different administrative
> controls it is impossible to change both zones simultaniously.

False.

Set the clocks correctly, and schedule the change on all the servers for
a particular time, using (for example) the tinydns timestamp feature
described in http://cr.yp.to/djbdns/tinydns-data.html. When that time
rolls around, all the servers will change their data simultaneously, as
RFC 1034 requires.

Yes, this is difficult to achieve with BIND, AXFR, etc. But it's easy to
achieve with better software, better replication protocols, etc. You're
making a fool of yourself when you call it ``impossible.''

---D. J. Bernstein, Associate Professor, Department of Mathematics,
Statistics, and Computer Science, University of Illinois at Chicago