Kluge delegation of a single host

[Christine.Tran at East.Sun.COM]

Gurus,

We have a TIS BSD box running 4.9.3-P1.  I found this kluge and wonder if this
is workable in 8.2.  There's a server farm of 10 servers distributed 
geographically, they all answer to www.jelly.com.  They used Cisco Distributed 
Director (CDD) which figures out which of the servers are alive and return the 
closest IP to the querry source based on shortest route and trip time.  The 
kluge is in the zone file, which seems to delegate the *host* www.jelly.com
to the CDD ( I have only seen delegation of a zone, not a single host but I don't see why it shouldn't work.)

www.jelly.com.  IN      NS      CDD.jelly.com.
cdd.jelly.com.  IN      A       1.2.3.4

I have not seen this before, is it legal? and workable in BIND 8.2?  If not,
can I mimic this dynamic load balancing within BIND somehow? 

QCT