DNS is just a key value store at heart anyway. The problem with couch is that it's designed for HTTP, and has lots of features that would not be required for a

DNS is just a key value store at heart anyway. The problem with couch is that it's designed for HTTP, and has lots of features that would not be required for a DNS server. DNS needs to be blindingly fast, and any new protocol would ideally need to be added to existing DNS servers like Bind.