convert-ip-db reads a DB file produced by
dns-terror. It converts the IP address to
hostname mappings from that file into Analog config directives. It
writes to the standard output, which should be saved in a file
(suggested name: dns.cache) which is sourced in Analog config
# 1008 is (35+7)*24, one week past the expire-ip-db default.
This handling of IP address resolution is similar in speed to using
dns-terror -oz to rewrite the log files in gzip form with IP addresses resolved,
so perhaps it should be considered obsolete.