Feature request: "ip lists".

[Johan Ihrén]

When building large scale DNS infrastructure with lots of servers all 
over the place it becomes an absolut nightmare to maintain ever growing 
lists of also-notifies, several versions of masters directives, etc, 
etc.

In the "incoming end" we have ACLs, i.e. we can use a more rational 
syntax for the various allow-* directives as there is already a src 
address to match against.

But in the outbound direction (notifies, masters, etc) there is no 
equivalent.

In one particular painful case we presently have 30+ very different 
IP-adresses in one giant also-notify clause repeated several times 
over. If I could replace all of that with a

	also-notify { myslaves; };

and only define "myslaves" once I'd be much happier.

Comments?

Regards,

Johan

PS. Yes, I know that I can externalize the problem by building the 
config file with an external tool. We're doing that too, but I would 
still like to see this solved as it is a generic problem with a rather 
simple fix.