Technical data

testing IPv6 on the 6bone. For more information about 6bone address allocation
and assignment, refer to the 6bone home page at the following location:
http://www.6bone.net
After you contract with your ISP for a block of addresses, your deployment of
IPv6 in your network begins the process of renumbering of your network. In
IPv4, network renumbering was a difficult and time-consuming process. In IPv6,
network renumbering is more dynamic. This enables you to renumber your
network for any of the following reasons:
• Your enterprise is growing and needs more address space.
• Your network needs are changing.
• Your enterprise wants a global presence.
• You are outgrowing your ISP.
Whatever the reason, when your current ISP contract expires, your right to use the
block of IPv6 addresses also expires. Although network renumbering is simplified
in IPv6, the following points will help ease the process:
_____________________ Decision Point _____________________
Have your routers advertise new network prefixes and deprecate the
old prefixes by setting a lifetime.
Change DNS servers to advertise node names and the new addresses.
Do not hard code addresses in configuration files, because this
makes the process more complex and labor intensive.
Clear all server caches, as appropriate.
9.6 Installing IPv6-Capable Routers
This process depends on the hardware vendor you have chosen. You will need to
define what address prefixes the router will advertise and the interfaces over
which to advertise them.
9.7 Configuring Domain Name System/BIND (DNS/BIND)
Servers
The OpenVMS operating system supports AAAA lookups over IPv4 (AF_INET)
connections only. The resolver and server have not been ported to IPv6, but IPv6
applications can make getaddrinfo and getnameinfo calls to retrieve the AAAA
records.
Before you configure a DNS/BIND server to operate in an IPv6 environment,
review the following steps:
1. Select a node to function as an IPv6 name server.
2. Dedicate a zone to IPv6 addresses or add IPv6 addresses to your enterprise’s
current zone. If you want global IPv6 name services, you must delegate a
domain under the
ip6.int
domain for the reverse lookup of IPv6 addresses.
Donotpointdifferentzonenamestothesamezonedatabasefile.
3. See RFC 1886 and RFC 3152 for more information.
If the system is configured as a DNS/BIND server, change the resolver
configuration to point to the local node for name lookups.
9–10 IPv6