Common Mistakes To Avoid; Additional Resources - Red Hat ENTERPRISE LINUX 3 Reference Manual

Chapter 12. Berkeley Internet Name Domain (BIND)
12.5.4. IP version 6
BIND version 9 supports name service in IP version 6 (IPv6) environments through the use of
records.
If the network environment includes both IPv4 and IPv6 hosts, use the
daemon on all network clients. This daemon is a very efficient, caching-only nameserver which un-
derstands the new
A6
mation.

12.6. Common Mistakes to Avoid

It is very common for beginners to make mistakes when editing BIND configuration files. Be sure to
avoid the following issues:
Take care to increment the serial number when editing a zone file.
•
If the serial number is not incremented, the master nameserver will have the correct, new informa-
tion, but the slave nameservers will never be notified of the change or attempt to refresh their data
of that zone.
Be careful to use ellipses and semi-colons correctly in the
•
An omitted semi-colon or unclosed ellipse section can cause
Remember to place periods (
•
A period at the end of a domain name denotes a fully qualified domain name. If the period is
omitted, then
named
If a firewall is blocking connections from the
•
uration file.
By default, BIND version 9 uses random ports above 1024 to query other nameservers. Some
firewalls, however, expect all nameservers to communicate using only port 53. Force
port 53 by adding the following line to the
query-source address * port 53;

12.7. Additional Resources

The following sources of information will provide additional resources regarding BIND.
12.7.1. Installed Documentation
BIND features a full-range of installed documentation covering many different topics, each placed
•
in its own subject directory:
/usr/share/doc/bind- version-number /
•
tures. Replace
/usr/share/doc/bind- version-number /arm/
•
SGML of the BIND 9 Administrator Reference Manual, which details BIND resource
requirements, how to configure different types of nameservers, perform load balancing, and
other advanced topics. For most new users of BIND, this is the best place to start. Replace
version-number with the version of
and records used under IPv6. See the
DNAME
) in zone files after all FQDNs and omit them on hostnames.
.
appends the name of the zone or the
version-number with the version of
/etc/named.conf
named
$ORIGIN
program to other nameservers, edit its config-
named
statement of
options
Directory — A list of the most recent fea-
bind
Directory — Contains HTML and
installed on the system.
bind
lightweight resolver
lwresd
man page for more infor-
lwresd
file.
to refuse to start.
value to complete it.
/etc/named.conf
installed on the system.
197
zone
A6
to use
named
: