BIND 9.2.0 Release Notes

New Features
New BIND 9.2.0 Features
Chapter 1 19
• forwarders
This option can be used to specify the IP addresses to be used for
forwarding. The forwarding facility can be used to create a large
site-wide cache on a few servers, reducing traffic over links to
external nameservers. This facility also allows queries by servers
that do not have direct access to the Internet, but wish to look up
exterior names. Forwarding occurs only on those queries for which
the server is not authoritative and does not have an answer in its
cache.
The forwarders option is specified in the /etc/named.conf file as:
[ forwarders { ip_addr [port ip_port] ;
[ ip_addr [port ip_port] ; ... ] }; ]
• allow-update
This option can be used to specify which hosts are allowed to submit
Dynamic DNS updates for master zones. By default, updates from all
hosts are denied.
NOTE allow-update option is not applicable for slave zones. Refer to the
named.conf(4) man page for more information.
named-checkconf
This utility is used to check the syntax of named.conf file. However, it
does not check for the semantics of the configuration file.
named-checkconf is run on the command line as:
/usr/sbin/named-checkconf [filename]
Where filename specifies the configuration file to be checked. The
default filename is /etc/named.conf.
NOTE Refer to the named-checkconf(1) man page for more information.