On 21 Feb 2003, D. J. Bernstein wrote: > 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. Clever. > 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.'' This could be done with a slight change to AXFR. Lets include it in the MAXFR proposal (the axfr mods, taken out of the "clarification".