Moving on to 0.50
The two main changes to version 0.50 will be support of IPv6 transport and proper dealing with binary data in dname labels (also see a previous post).
The latter makes Net::DNS come with its own c-library (which only contains dn_expand for now) and ends the need for relying on libresolv.a.
The two development branches have been merged on the trunk. It will take a while before I move to 0.50.