Sorry to break the thread, I had not subscribed to the bug (done now). Did a quick test of applying Dominique's suggestion on top of libnetaddr-ip-perl v4.035, and this doesn't seem to solve the problem with spamassassin. The message with lead to creation of 601601 is still appearing.
Please not I am not a Perl expert, so my test might not be highly reliable but this gives a hint... Best, -- Damien -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org