BIND 8 when processing an IXFR stream. 'no-change' deltas
will now trigger a fallback to AXFR as the recovery mechanism.
</para>
+ <para>
+ BIND 9 will no longer build on platforms that doesn't have
+ proper IPv6 support. BIND 9 now also requires non-broken
+ POSIX-compatible pthread support. Such platforms are
+ usually long after their end-of-life date and they are
+ neither developed nor supported by their respective vendors.
+ </para>
</listitem>
</itemizedlist>
</section>