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% were made. This version includes a cryptographically secure random generator, fixing a security issue where PowerDNS could be spoofed. A number of smaller and larger issues were fixed. Importantly, compatibility with recent gcc versions was restored. The new IPv6 root-servers are now picked up automatically. Finally, domains can now be forwarded to multiple IP addresses and ports.

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