Patches to have dnscache listen on multiple IP addresses

I've received a couple requests to add support for dnscache listening
on multiple IP addresses to zinq-djbdns.  I see this patch available:

  http://danp.net/djbdns/dnscache-1.05-multiple-ip.patch

Thoughts?  Anybody know of any other patches to do this?  I'm not
trying to start another debate over whether you should run multiple
instances of dnscache or run one instance listening on multiple
addresses.  The case can be made both ways.  I've decided I'd like to
add functionality for the latter scenario and let the user decide for
themselves what is best for their particular situation.