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pickdns.8
pickdns - A load-balancing DNS server.
pickdns is a load-balancing DNS server. It accepts iterative DNS queries from hosts around the Internet, and responds with a dynamic selection of locally configured IP addresses with 5-second TTLs. In versions 1.04 and above, the features of pickdns have been integrated into tinydns.
Normally pickdns is set up by the pickdns-conf program. pickdns runs chrooted in the directory specified by the $ROOT environment variable, under the uid and gid specified by the $UID and $GID environment variables.
pickdns listens for incoming UDP packets addressed to port 53 of $IP. It does not listen for TCP queries.
pickdns rejects inverse queries, non-Internet-class queries, truncated packets, packets that contain anything other than a single query, and query types other than A or MX or *. It looks up other queries inside data.cdb, a binary file created by pickdns-data.
pickdns-conf(8), svscan(8), svc(8), multilog(8), axfrdns-conf(8), rbldns-conf(8), tinydns-conf(8), dnscache-conf(8), http://cr.yp.to/djbdns.html