Generate dynamic answers from bind 8.2.x

[Patrick Greenwell]

On 25 Jul 1999, Piet Honkoop wrote:

> In order to create a fully redundant setup for a server set, we are looking
> for a possibility to dynamically generate an answer if a request for a certain
> A record comes in (www.domain.com). The answer will be depending on a number
> of factors:
> 	* source of the request (the DNS server will have access to a full
> 	  BGP table)
> 	* load of the nearby servers (so that weighted load balancing can
> 	  take place over the various servers).
> 	* availability of the server(s)
> 
> Needless to say, the servers will be spread around the world and by dynamically
> answering to DNS requests we try to keep the traffic localized as much as 
> possible.
> 
> My questions:
> 	* does such a setup exist? If so, where can we find info about this

http://www.ultradns.com is doing this.