global server load balancing / limit number of response records

[Kevin Darcy]

Timo Proescholdt wrote:

>Hi Folks,
>
>I wonder wether the following is possible to configure in bind9.
>
>Is it possible to limit the number of A / AAAA records returned to a query
>for an address that has multiple A / AAAA records configured.
>Standart behavior is that the records are shuffled 
>(according to ordering the scheme ), and returned altogether . 
>What I want now is that the shuffling takes place, but all but the very first
>record are 'cut off' so that the aperance of an address with just one A record
>is created. (which changes according to the shuffling scheme).
>
>AFAIK this is sometimes referred to as 'global server load balancing'.
>
>I am very aware of the consequences (caching, uncontrollable client library
>behavior etc). I can afford these brawbacks since the environment is pretty
>local with no other servers inbetween.
>  
>
To send such a response without indicating truncation would be a 
violation of RFC 2181, Section 5.1.

                                                                         
                                    - Kevin