User's Guide Part 2

Appendix E IPv6

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and IPv4 network. A 6to4 relay router is used to forward packets between 6to4 routers in an IPv4

Internet and an IPv6 device (Z) on the IPv6 Internet.

To transmit packets, a 6to4 address is used with a special IPv6 prefix of 2002:: to encode a given

IPv4 address. A 6to4 address has the following format:

2002:IPv4 address:subnet ID:host ID/64

For example, if you have an IPv4 address of 192.168.1.1 (first converted to binary notation and then to

the colon hexadecimal representation of

c0a8:0101), then the 6to4 addresses is 2002:c0a8:0101::1/

Example - Enabling IPv6 on Windows XP/2003/Vista

By default, Windows XP and Windows 2003 support IPv6. This example shows you how to use the

ipv6 install command on Windows XP/2003 to enable IPv6. This also displays how to use the

ipconfig command to see auto-generated IP addresses.

IPv6 is installed and enabled by default in Windows Vista. Use the ipconfig command to check

your automatic configured IPv6 address as well. You should see at least one IPv6 address available

for the interface on your computer.

Example - Enabling DHCPv6 on Windows XP

Windows XP does not support DHCPv6. If your network uses DHCPv6 for IP address assignment,

you have to additionally install a DHCPv6 client software on your Windows XP. (Note: If you use

static IP addresses or Router Advertisement for IPv6 address assignment in your network, ignore

this section.)

This example uses Dibbler as the DHCPv6 client. To enable DHCPv6 client on your computer:

1 Install Dibbler and select the DHCPv6 client option on your computer.

C:\>ipv6 install

Installing...

Succeeded.

C:\>ipconfig

Windows IP Configuration

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :

IP Address. . . . . . . . . . . . : 10.1.1.46

Subnet Mask . . . . . . . . . . . : 255.255.255.0

IP Address. . . . . . . . . . . . : fe80::2d0:59ff:feb8:103c%4

Default Gateway . . . . . . . . . : 10.1.1.254