PyDNS (aka python-dns) before 2.3.1-4 in Debian GNU/Linux does not use random source ports or transaction IDs for DNS requests, which makes it easier for remote attackers to spoof DNS responses, a different vulnerability than CVE-2008-1447.
http://www.openwall.com/lists/oss-security/2008/09/16/4
http://www.openwall.com/lists/oss-security/2008/09/11/1
http://packages.debian.org/changelogs/pool/main/p/python-dns/python-dns_2.3.3-1/changelog