techblog 

We have recently released version 1.0 of a port of the perl Net::DNS library to Ruby. This port has been done line by line, and preserves the original perl API. This allows existing perl applications to be ported easily to Ruby, as well as giving new Ruby programs access to a complete DNS implementation (although it should be noted that the Net::DNS::SEC module has not been ported).
All resource record types are implemented and EDNS is supported, as are zone transfers and dynamic updates.
The project can be found on Rubyforge here.

A native Ruby implementation (dnsruby) will be released soon. This version presents a clean, full DNS implementation in Ruby with a well-designed API borrowing the best aspects of Net::DNS and dnsjava.