dns-clustering?

[Marten Lehmann]

Hello,

the amount of zones we are managing is increasing daily. Instead of 
setting up dozends of discrete nameservers (ns5, ns6, ns7...), I would 
like to have a load balanced nameserver cluster. In the end, I want to 
promote only two nameservers (ns1 and ns2) to delegate a domain, but if 
the load increases, I simply want to add an additional nameserver to the 
cluster. Has anyone done this with bind?

Regards
Marten