pdns-recursor - security update

Florian Maury from ANSSI discovered a flaw in pdns-recursor, a
recursive DNS server : a remote attacker controlling
maliciously-constructed zones or a rogue server could affect the
performance of pdns-recursor, thus leading to resource exhaustion and
a potential denial-of-service.

For Debian 6 Squeeze, these issues have been fixed in pdns-recursor version 3.2-4+deb6u1