<para>
Beyond PowerDNS 2.9.20, the Authoritative Server and Recursor are released separately.
</para>
+ <sect2 id="changelog-recursor-3.5.3"><title>PowerDNS Recursor version 3.5.3</title>
+ <note>
+ <para>
+ Released September 17th, 2013
+ </para>
+ <para>
+ Downloads:
+ <itemizedlist>
+ <listitem>
+ <para>
+ <ulink url="https://www.powerdns.com/downloads.html">Official download page</ulink>
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ <ulink url="http://www.monshouwer.eu/download/3rd_party/pdns-recursor/">native RHEL5/6 packages from Kees Monshouwer</ulink>
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+ </note>
+ <para>
+ This is a bugfix and performance update to 3.5.2. It brings serious performance improvements for dual stack users.
+ </para>
+ <para>
+ Changes since 3.5.2:
+ <itemizedlist>
+ <listitem>
+ <para>
+ 3.5 replaced our ANY query with A+AAAA for users with IPv6 enabled. Extensive measurements by Darren Gamble
+ showed that this change had a non-trivial performance impact. We now do the ANY query like before, but fall
+ back to the individual A+AAAA queries when necessary. Change in g1147a8b.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ The IPv6 address for d.root-servers.net was added in g66cf384, thanks Ralf van der Enden.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ We now drop packets with a non-zero opcode (i.e. special packets like DNS UPDATE) earlier on. If the experimental pdns-distributes-queries flag is enabled, this fix avoids a crash. Normal setups were never susceptible to this crash. Code in g35bc40d, closes t945.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ TXT handling was somewhat improved in g4b57460, closing t795.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+ </sect2>
<sect2 id="changelog-recursor-3.5.2"><title>PowerDNS Recursor version 3.5.2</title>
<note>
<para>