With a small codebase, the PowerDNS Recursor is an advanced resolver currently serving the DNS resolving needs of over 40 million Internet connections. Besides high performance (using kqueue or epoll, over 50 thousand qps on commodity hardware), it provides advanced anti-spoofing measures. In addition, the program caches server performance and timeouts, making it both network and user friendly. It also has built-in hooks for making graphs with rrdtool, providing insight into nameserver performance.License: GNU General Public License (GPL)Changes:
Modest performance improvements of around 20% weremade. This version includes a cryptographicallysecure random generator, fixing a security issuewhere PowerDNS could be spoofed. A number ofsmaller and larger issues were fixed. Importantly,compatibility with recent gcc versions wasrestored. The new IPv6 root-servers are now pickedup automatically. Finally, domains can now beforwarded to multiple IP addresses and ports.

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