I have been writing a perl script that uses the Net::DNS modules. After banging my head, so to speak for many days, I asked on a DNS-related discussion list for help in figuring out why name server updates had started always failing with errors about not auth and BADKEY when I seem to recall that they had once worked. That was when someone told me that Net::DNS0.73 has a bug in it. The solution was to either downgrade to the previous version of Net:DNS or apply a release candidate which reportedly does not have the bug.
I didn't know for sure which version we had so I put a print statement in the code to cause it to print out the version number and sure enough, we have the buggy version.
Simply, what is the easiest way to downgrade so that we don't break anything else?