DNS Configuration and Management Manual (G06.27+, H06.05+, J06.03+)

BIND 9.x on the NonStop Server
HP DNS Configuration and Management Manual—529432-003
2-15
IPv6 Address Support
The listen-on-v6 option accepts only any and none as arguments.
BIND 9.x lets you determine which IPv6 address to use in Notify messages, by using
the notify-source option statement. The IPv6 option statement is called notify-
source-v6.
The A6 and DNAME Records
IPv6 forward and reverse mapping uses two new record types: A6 and DNAME
records described in RFC 2874, “DNS Extensions to Support IPv6 Address
Aggregation and Renumbering” and RFC 2672, “Non-Terminal DNS Name
Redirection” respectively.
A6 records can specify only a part of an IPv6 address, such as the last 64 bits (the
interface ID) assigned to a host's network interface, and refer to the remainder of the
address by a symbolic domain name. This arrangement allows zone administrators to
specify only the part of the address under their control.
For example, consider the A6 record:
$ORIGIN hp.com
inventor IN A6 64 ::0210:4bff:fe10:0d24
subnet1.v6.hp.com
specifies the final 64 bits of the inventor.hp.com IPv6 address (64 is the number of
bits of the prefix not specified in this A6 record) and that the remaining 64 bits can be
found by looking up an A6 record at subnet1.v6.hp.com.
subnet1.v6.hp.com, in turn, specifies the last 16 bits of the 64-bit prefix (the SLA
ID) that not specified in inventor.hp.com's A6 address as well as the domain name
of the next A6 record to look up:
$ORIGIN v6.hp.com.
subnet1 IN A6 48 0:0:0:1:: hp-res.lab1.net.
subnet1 IN A6 48 0:0:0:1:: hp.lab2.net.
Example 2-14. Setting named to Listen on IPv6 Interfaces
options {
listen-on-v6 { any; };
};
Example 2-15. Setting the IPv6 Address for Notify Messages
options {
notify-source-v6 222:10:2521:1:210:4bff:fe10:d24;
};