Net::DNS::TestNS 1.06
I have just uploaded Net::DNS::TestNS to CPAN.
It provides a class to setup a number of nameservers that respond to specific DNSqueries (QNAME,QTYPE) by pre-specified answers. This class is to be used in test suites where you want to have servers to show predefined behavior. The behaviour is defined through XML files.
I have been using the class in some tests suites of (yet unreleased) code. I think its useful enough for a wider audience.
The code also has its own branch on the net-dns.org subversion tree.