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This section describes the procedure for setting TCP/IPv6 using the control panel. After specifying the settings for TCP/IPv6, follow the procedure in "Settings Common to TCP/IPv4 and TCP/IPv6" to specify the required settings, and the procedure in "Confirming TCP/IPv6 Settings" to check whether the network settings are correct. If the settings for TCP/IPv4 are already specified and you have finished specifying the settings common to TCP/IPv4 and TCP/IPv6, only check the network settings after completing this procedure. If you want to use IPv4 communications at the same time, follow the procedure in "TCP/IPv4 Settings" to specify the required settings, and the procedure in "Confirming TCP/IPv4 Settings" to check the settings.

The machine can use up to seven of the following IPv6 addresses. With IPv6 communication, multiple IPv6 addresses can be used at the same time.

• If the IPv6 address assigned to the machine is the same as another node, you may not be able to perform IPv6 communication, even though an IPv6 address is displayed on the screen.

• Link local address (1)

An address that is only valid within the same link. A link local address is automatically set using a specific prefix (fe80::) and an interface identifier generated from the MAC address of the machine. When the machine is using the functions of IPv6, one link local address is always registered.

• Manual address (0 or 1)

A fixed address that is set from the control panel.

• Stateless address (0 to 4)

A stateless address is automatically set using the machine's MAC address and the prefix (information indicating the network belonged to) included in the RA (Router Advertisement) notified by the router when the machine is started.

• Stateful address (0 or 1)

A stateful address can be obtained from a DHCP server using DHCPv6.

1. On the TCP/IP Settings screen, press [IPv6 Settings] → [Use IPv6].

2. In [Use IPv6], specify the following.

[On] for <Use IPv6>: You can use an IPv6 network. A link local address is automatically set.

3. On the IPv6 Settings screen, press [Stateless Address Settings] → specify the following.

[On] for <Use Stateless Address>: A stateless address is automatically set when the machine is started.

• The stateless address is discarded when the machine is restarted (with the machine's main power switch ON).

4. On the IPv6 Settings screen, press [Manual Address Settings] → specify the following.

[On] for <Use Manual Address>: You can set the IPv6 address manually.

Enter the IPv6 address value in [Manual Address] and the IPv6 address prefix length in [Prefix Length].

Enter the default router address value in [Default Router Addr.]. If you do not want to specify the default router address, leave [Default Router Addr.] blank.

• You cannot use a manual address if you leave [Manual Address] blank. You also cannot set any of the following types of address for [Manual Address]:

• Multicast address

• Address composed entirely of zeros

• IPv4 compatible address (an IPv6 address with the top 96 bits set to '0' and an IPv4 address in the lower 32 bits)

• IPv4 mapped address (an IPv6 address with the top 96 bits set to '0:0:0:0:0:ffff:' and an IPv4 address in the lower 32 bits)

• You cannot enter a multicast address or an address composed entirely of zeros in [Default Router Addr.].

5. On the IPv6 Settings screen, press [Use DHCPv6] → specify the following.

[On] for <Use DHCPv6>: You can use DHCPv6 to obtain a stateful address from a DHCP server.

6. On the Network screen, press [Firewall Settings] → [IPv6 Address Filter] → specify the following.

By specifying the settings described below, you can filter received packets and transmitted packets using IPv6 addresses and improve security when sending and receiving data between your computer and the machine. The possibility of a third person gaining unauthorized access can be reduced by configuring the settings for [IPv6 Address Filter] in accordance with the environment you are using.
If you want to deny data transmission/reception between a computer with a specified IPv6 address and the machine, set the default policy for the transmission or reception filter so as to allow transmission/reception, and enter the IPv6 address to be denied. Data transmission/reception between the computer having the specified IPv6 address and the machine will be disabled. Also, the Remote UI cannot be used, and information regarding the machine cannot be displayed or set using a utility on the computer whose IPv6 address has been specified.
If you want to enable data transmission/reception only with a computer having a specified IPv6 address, set the default policy for the transmission or reception filter so as to deny transmission/reception, and enter the IPv6 address to be allowed. Data transmission/reception will be enabled only between the computer having the specified IPv6 address and the machine. The Remote UI can be used, and information regarding the machine can be displayed and set using a utility only on the computer whose IPv6 address has been specified.

• If you want to deny transmission/reception of data with the computer having the specified IPv6 address:

• If you want to allow transmission/reception of data only with the computer having the specified IPv6 address:

• If you do not want to restrict data transmission/reception:

• If you want to deny transmission/reception of data with the computer having the specified IPv6 address:

• Press [TX Filter] or [RX Filter] → set <Use Filter> to 'On'.

• Set <Default Policy> to [Allow].

• Press [Register] → set the IPv6 address for which data transmission/reception is to be denied, or specify the prefix and prefix length of the IPv6 address(es).

• If data transmission/reception is attempted between the device having the IPv6 address specified in this procedure and the machine, a block log will be generated. To display the block log, see "Checking the Block Log."

• If you want to allow transmission/reception of data only with the computer having the specified IPv6 address:

• Press [TX Filter] or [RX Filter] → set <Use Filter> to 'On'.

• Set <Default Policy> to [Reject].

• Press [Register] → set the IPv6 address for which data transmission/reception is to be allowed, or specify the prefix and prefix length of the IPv6 address(es).

• If you do not want to restrict data transmission/reception:

• Press [TX Filter] or [RX Filter] → set <Use Filter> to 'Off'.

• You can register up to 16 IPv6 addresses or IPv6 address prefixes.

• You cannot specify a multicast address for an IPv6 address.

• If the usage of a protocol or print application is not permitted on your device, it cannot be used even after settings in [Firewall Settings] have been changed; on your device, configure the settings to permit the protocol or print application.

• If you enter '255' in [Prefix Length], no IPv6 addresses will be set.

• If you enter '0' in [Prefix Length], all IPv6 addresses will be set.

7. On the TCP/IP Settings screen, press [DNS Settings] → [DNS Server Address Settings].

8. In <IPv6>, specify the following.

If you want to use dynamic DNS updating, enter the IPv6 address of the DNS server in [Primary DNS Server].

If you do not want to specify a secondary DNS server, leave [Secondary DNS Server] blank.

• You cannot enter any of the following types of address for [Primary DNS Server] or [Secondary DNS Server]:

• Multicast address

• Address composed entirely of zeros

• Link local address

• If you set <Use DHCPv6> to 'On' in step 5, the IPv6 address of a DNS server you set manually will be overwritten.

9. On the DNS Settings screen, press [DNS Host/Domain Name Settings] → in <IPv6>, specify the following.

[On] for <Use Same Host Name/Domain Name as IPv4>: You can set the same host name or domain name used with IPv4 communication for IPv6 communication. If you set <Use Same Host Name/Domain Name as IPv4> to 'Off', enter the name of the machine in [Host Name] and the name of the domain the machine belongs to in [Domain Name]. It is necessary to set a host name and domain name if you want to use dynamic DNS updating.

• If you set <Use DHCPv6> to 'On' in step 5, the domain name you set manually will be overwritten. Even if you set <Use Same Host Name/Domain Name as IPv4> to 'On', the domain name obtained from the DHCPv6 server is used.

10. On the DNS Settings screen, press [DNS Dynamic Update Settings] → in <IPv6>, specify the following.

[On] for <DNS Dynamic Update>: If your environment includes a dynamic DNS server, you can automatically register the IPv6 address, host name, and domain name set for the machine in the DNS server using dynamic DNS updating.

[On] for <Register Stateless Address>: You can automatically register a stateless address in the DNS server using dynamic DNS updating.

[On] for <Register Manual Address>: You can automatically register a manual address in the DNS server using dynamic DNS updating.

[On] for <Register Stateful Address>: You can automatically register a stateful address in the DNS server using dynamic DNS updating.

• Windows 2000 Server and Windows Server 2003 do not support DHCPv6 servers.

• If you have a DHCPv6 server running Windows 2008 Server that uses the DHCPv6 service and want to register the machine's DNS record, configure the following settings in the DHCPv6 server:

• In the DHCPv6 server, right-click the [Scope] icon → click [Properties]. In the [DNS] sheet of the displayed dialog box, select [Enable DNS dynamic updates according to the settings below] → [Dynamically update DNS A and PTR records only if requested by the DHCP clients].

• In the Active Directory environment, right-click the icon of the DHCPv6 server you are using → select [Properties]. In the [Advanced] sheet of the displayed dialog box, click [Credentials]. In the [DNS dynamic update credentials] dialog box, enter the user name, domain, and password for the Active Directory.

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