Description of problem: See http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg368485.html. This bug, among others, causes a "Modification of a read-only value attempted" error in OTRS: http://www.mail-archive.com/otrs@otrs.org/msg18769.html Attached patch fixes this problem.
Created attachment 189921 [details] The fix
It looks like the latest version of perl-Net-DNS (0.61) fixes this issue. This version is already available as an update for F7 and is in rawhide. I've built that version, and it should be in updates-testing soon. Can you give it a try when it becomes available?
As there was no further communication from the original poster since September, I propose closing this bug as CURRENTRELEASE.
I'm running perl-Net-DNS-0.61-1.fc7 and I didn't experience the problem anymore.