type "perl -MCPAN -e shell" Select no for manual configuration type "install Net::DNS"
Net-DNS-0.59 is the version that is available via this method.
Except that rpm is not aware that you've updated things, and any package relying on this rpm will have issues. This is a bad way to do things for an rpm based distribution, hence the OP stating that he was hesitant to use cpan.