BIND 9.3.2 Release Notes

domain names in the RDATA of NS, SOA, and MX records. It also applies to the RDATA
of PTR records where the owner name indicates that it is a reverse lookup of a hostname
(the owner name ends with in-addr.arpa, ip6.arpa, or ip6.int).
The default value of the check-names option depends on the usage area. For master
zones, the default value is fail. For slave zones, the default value is warn. For an
answer (response) received from the network, the default value is ignore.
New Options to Enable and Disable IXFR
In BIND 9.3.2, the incremental zone transfer (IXFR) feature is enabled by default.
describes the new options available in the options statement that can be used to
enable and disable IXFR.
Table 1-4 Options to Enable and Disable IXFR
DescriptionOption
Determines whether the local server, which acts as a master,
responds with an incremental zone transfer when the remove slave
server requests an IXFR. If the provide-ixfr option is set to yes,
incremental transfer is provided whenever possible. If this option
is set to no, all transfers to the remote server is non-incremental.
If the provide-ixfr option is not set, the value of provide-ixfr
in the view or global options statement is used as default.
provide-ixfr yes_or_no;
Determines whether the local server, acting as a slave, requests
incremental zone transfers from a remote master server. If this
option is not set, the value of request-ixfr in the view or global
options statement is used as default. If this option is set to yes,
the server, by default, collects statistical data of all zones in the
server. If this option is set to no, the server requests a full zone
transfer (AXFR).
request-ixfr yes_or_no;
Loads a new version of the master zone from the zone file of the
server, or receives a new version of the slave file by a
non-incremental zone transfer. If this option is set to yes, when the
server receives a new version of a slave file by a non-incremental
zone transfer, the server compares the new version of the master
zone with the previous version of master zone and calculates the
set of differences. The differences are logged in the journal file of
the zone such that the changes can be transmitted to downstream
slaves as an incremental zone transfer. If this option is set to no, the
name server must perform a complete zone transfer to the slave
server.
ixfr-from-differences
yes_or_no;
Transition Support for IPv4 and IPv6
BIND 9.3.2 provides transition support for IPv4 and IPv6 to solve the problem caused
by lack of support for either IPv4 or IPv6 address on a host system. It also provides the
dual-stack-servers option to enable the transition support for IPv4 and IPv6
12 BIND 9.3.2 Release Notes