resolving differently depending on location?

[Kevin Darcy]

Kevin Darcy wrote:

>Barry Margolin wrote:
>
>  
>
>>In article <dj17cv$2hks$1 at sf1.isc.org>,
>>Kevin Darcy <kcd at daimlerchrysler.com> wrote:
>>
>> 
>>
>>    
>>
>>>BIND *does* however, have support for "sortlist". One can have the name 
>>>resolve to all of the location-specific IPs, and then sort them 
>>>according to the source IP of the DNS client. This only works 
>>>*reliably*, however, when the sortlist configuration of all resolvers is 
>>>tightly controlled.
>>>   
>>>
>>>      
>>>
>>Right, so it's useless for a public web site.
>>
>>    
>>
>The OP specified a "global intranet". That's what I deal with here, and 
>we use sortlist quite effectively. The hardest part is keeping all of 
>the servers' sortlist definitions current, but we're working on 
>automating it...
>
Just to flog this a little more, I forgot to mention that the sortlist 
approach is *not* appropriate for apps where the client piece does 
automatic address failover, but which, on the server side, simply cannot 
tolerate a client connecting to the wrong server. I have yet to run 
across such an app, but I'll put that caveat out there nonetheless...

                                                                         
                                                   - Kevin