Added BLACKHOLE macro

[nsc-5.git] / README

diff --git a/README b/README
index 00b31e5db31e792e29c7e01112fa3a9dbb16d145..776108e27e072117b7cbadd9f2c82edf486800f7 100644 (file)
--- a/README
+++ b/README
@@ -1,5 +1,5 @@
 
 

-           Domain Name Server Configuration Utilities -- NSC 3.0.2
+            Domain Name Server Configuration Utilities -- NSC 3.1

 
                    (c) 1997--2008 Martin Mares <mj@ucw.cz>
 
 
                    (c) 1997--2008 Martin Mares <mj@ucw.cz>
 


@@ -109,6 +109,9 @@ PRIMARY(zone, [extra-files...])
                concatenated to produce a single configuration). See the next
                section for a look inside these files.
 
                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.
 SECONDARY(zone, primary)
                Define a zone we run a secondary name server for.
                "primary" is an IP address of the primary name server.


@@ -136,6 +139,16 @@ REVERSE(network, primary-files...)
                You can also use the REV macro explicitly, which can be handy
                for example in SECONDARY declarations.
 
                You can also use the REV macro explicitly, which can be handy
                for example in SECONDARY declarations.
 

+FORWARDED(zone, ip...)
+               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;
 ')
 ZONE_OPTIONS(`options;
        more options;
 ')