[dns-operations] using different DNS providers together

[Stephane Bortzmeyer]

On Tue, Nov 06, 2012 at 03:20:51PM +0800,
 zhanglikun <zhanglikun at cnnic.cn> wrote 
 a message of 187 lines which said:

> Bad point is: you have to keep the data be consistent by hand
> without some automated tools 

Why "by hand"? NOTIFY + IXFR is implemented in every name server
software, and is standard (.fr has several DNS providers, too, and we
certainly do not keep the data consistent by hand).