concatenated to produce a single configuration). See the next
section for a look inside these files.
+ When the zone name contains a slash (as happens in classless
+ reverse zones), it is replaced by "@" in the cf file name.
+
SECONDARY(zone, primary)
Define a zone we run a secondary name server for.
"primary" is an IP address of the primary name server.
Define a forwarding zone. All queries are forwarded to the
specified name servers.
+BLACKHOLE(zone)
+ Define an empty zone according to RFC 6303. This is usually done
+ for zones for which clients are known to erroneously ask queries
+ (e.g., reverse resolving of link-local addresses). The contents
+ served for these zones is taken from cf/blackhole.
+
ZONE_OPTIONS(`options;
more options;
')