BIND 8.1.2 Release Notes

New and Changed Features
New Features
Chapter 1 9
Support for Dynamic DNS Update
Dynamic update is the ability to add, modify or delete resource records in
the master zone files, under a specified zone. Dynamic update is based on
the RFC 2136. You can enable dynamic update for a zone by including an
allow-update clause in the zone statement of the /etc/named.conf
file.
You can use the nsupdate utility to submit Dynamic DNS update
requests to a name server, as defined in RFC2136. Using this feature,
you can add or remove resource records from a zone without manually
editing the zone file. A single update request can contain requests to add
or remove more than one resource records. For more information, type
man 1 nsupdate at the HP-UX prompt.
Improved Logging System
The BIND 8.1.2 logging system provides improved control on how the
server logs events. You can configure the logging system using the
logging statement in the /etc/named.conf file. The new logging
system supports the following activities:
• Limit incoming messages to a given severity level.
• Limit the size of the logging file.
• Manage multiple versions of the logging file (to maintain historic
data).
• Direct the logging messages to any of the syslog facilities.
• Specify where messages belonging to specific categories must be
logged.
See “The logging Statement” on page 12 for more information.
Efficient Zone Transfer
BIND 8.1.2 provides efficient zone transfer using the transfer-format
clause in the /etc/named.conf file. You can use the transfer-format
on the master server to determine the format in which the zone transfers
are sent. You can send zone transfers using two different formats:
one-answer and many-answers. The one-answer format uses one DNS
message for every resource record transferred. The many-answers
format accommodates as many resource records as possible into a