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       rbldns-data - data tool for rbldns


       rbldns-data  reads  an  IP  address  list from a file named data in the
       current directory.  It creates data.cdb in a binary format designed for
       fast  access  by  rbldns(8).   It may also create some other files with
       names beginning with data.

       rbldns-data updates data.cdb atomically, so you can use it safely while
       rbldns(8)  is  running.   If  anything  goes wrong with the creation of
       data.cdb, rbldns-data stops and leaves the old data.cdb in place.

Data format


       The IP address ip is on the list.


       All IP addresses that share the first n bits of the IP address  ip  are
       on  the list.  For example, means all 1.2.3.*  addresses.  n
       must be at least 8, and all bits past the nth in ip must be 0.


       DNS queries for addresses on the list will receive an A record of a and
       a  TXT record of txt.  Typically a is and txt is a pointer to
       a web page about the list.

       If txt ends with $, rbldns(8) replaces the $ with the IP address.


       Comment line. The line is ignored.