NAME

		 rbldns-data - blacklist generation for rbldns

DESCRIPTION

		 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.

		 rbldns-data updates data.cdb atomically, so you can use it safely while
		 rbldns 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

		 ip4 : The IPv4 address ip4 given in dotted decimal format is on the
		 list.

		 ip4/n : All IPv4 addresses that share the first n bits of the IP
		 address ip4 are on the list.  For example, 1.2.3./24 means all 1.2.3.*
		 addresses.

		 ip6 : The IPv6 address ip6 provided in compactified format is on the
		 list.

		 ip6/n : All IPv6 addresses sharing the first n bits of ip6 are
		 considered.  A rule 2002:/16 would block all 6to4 addresses.  For
		 practical reasons, n needs to smaller/equal than 64, since the lower
		 bits of an IPv6 address denominates the link token and is not relevant
		 for routing.

		 =a:txt : DNS queries for addresses on the list will receive an A record
		 of a and a TXT record of txt.  Typically a is 127.0.0.2 and txt is a
		 pointer to a web page about the list.

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

		 #comment : Comment line. The line is ignored.

		 Note: The generated data.cdb is not binary compatible with older
		 versions of rbldns.  In addition, IP addresses are evaluated at bit
		 level to comply with the CIDR requirements.


SEE ALSO

	 rbldns(8), rbldns-conf(8)


REFERENCE

		 http://cr.yp.to/djbdns.html, http://www.rfc-editor.org/info/rfc5782



                                       8            djbdnscurve6:(rbldns-data)

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