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When you enter an IPv6 address, you can use double colons to compress a contiguous sequence of zeros. You can also omit any leading zeros in a four-hexadecimal group. For example, the complete IPv6 address 2006:0000:0000:0123:4567:89ab:0000:cdef can be shortened to 2006::123:4567:89ab:0:cdef. Note that if there are multiple noncontiguous groups of zeros, the double colon can only be used for one group to avoid ambiguity. The NIOS appliance displays an IPv6 address in its shortened form, regardless of its form when it was entered.

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Configuring IPv6 on a Grid Member

You can configure a Grid member in either IPv6 or dual mode (IPv4 and IPv6) to support IPv6 connections. A dual mode Grid member supports both IPv4 and IPv6 connections by configuring an IPv6 address on the member, in addition to the standard IPv4 address.
When you enable IPv6 on a member, you can manually enter the IPv6 gateway address or enable the member to automatically acquire the address from router advertisements. Routers periodically send router advertisements that contain link-layer addresses and configuration parameters. A NIOS appliance that supports IPv6 can listen for router advertisements and obtain the default gateway IP address and link MTU (maximum transmission unit). The link MTU is the maximum packet size, in octets, that can be conveyed in one transmission unit over a link. Thus you can set parameters on a router once and automatically propagate it to all attached hosts.
To configure the member to support IPv6:

1. From the Grid tab, select the Grid Manager tab -> Members tab.

2. Expand the Toolbar and click Add -> Add Grid Member.

3. In the Add Grid Member wizard, enter the following and click Next:

   • Member Type: Specify the appliance type of the Grid member. If the member is an Infoblox appliance, select Infoblox, which is the default. If the member is a NIOS virtual appliance, select Virtual NIOS.

   • Host Name: Type the FQDN (fully qualified domain name) of the appliance that you are adding to the Grid.

   • Time Zone: If the Grid member is in a different time zone from the Grid, click Override and select a time zone.

   • Comment: Type a comment that provides some useful information about the appliance, such as its location.

   • Master Candidate: Select this option to designate this appliance as a Master Candidate. For supported vNIOS appliances, see Supported vNIOS Appliance Models and Specifications. Note that the Grid Master Candidate must use the same communication protocol as the Grid Master.

4. Enter the following information about the member that you are adding to the Grid and click Next:

   • Type of Network Connectivity: Select IPv6 to configure an IPv6 Grid member or select IPv4 and IPv6 to configure a dual mode Grid member.

   • Select Standalone Member to configure a single member or select High Availability Pair to configure an HA member.
     For an HA member, enter the Virtual Router ID number and if the HA member is configured in dual mode, select IPv6 in the Send HA and Grid Communication Over field. 

   • Required Ports and Addresses: This table lists the network interfaces based on the type of network connectivity of the Grid member. 
     For IPv6 Grid member, specify the network information for LAN1(IPv6) interface. For a dual mode Grid member, specify the network information for both LAN1(IPv4) and LAN1(IPv6) interfaces.
     For IPv6 HA member, specify the network information for VIP (IPv6), Node1 LAN1(IPv6), and Node2 LAN1(IPv6) ports. For a dual mode HA member, specify the network information for the following interfaces: VIP (IPv4), Node1 LAN1(IPv4), Node2 LAN1(IPv4), VIP (IPv6), Node1 LAN1(IPv6), and Node2 LAN1(IPv6).
     Enter correct information for the following by clicking the field:

     • Interface: Displays the name of the interface. You cannot modify this.

     • Address: You can enter IPv4 or IPv6 address depending on the type of interface. An IPv6 address is a 128-bit number in colon hexadecimal notation. It consists of eight 16-bit groups of hexadecimal digits separated by colons (example: 2001:db8:0000:0123:4567:89ab:0000:cdef or 2001:db8::123:4567:89ab:0:cdef).

     • Subnet Mask (IPv4) or Prefix Length (IPv6): Enter an appropriate subnet mask for IPv4 address and prefix length for IPv6 address. The prefix length ranges from 2 to 127.

     • Gateway: Type the default gateway for the interface. For IPv6 interface, you can also type Automatic to enable the appliance to acquire the IPv6 address of the default gateway and the link MTU from router advertisements.

     • VLAN Tag: For a VLAN, enter the VLAN tag or ID. You can enter a number from 1 to 4094. Ensure that you configure the corresponding switch accordingly.

     • Port Settings: From the drop-down list, choose the connection speed that you want the port to use. You can also choose the duplex setting. Choose Full for concurrent bidirectional data transmission or Half for data transmission in one direction at a time. Select Automatic to instruct the NIOS appliance to negotiate the optimum port connection type (full or half duplex) and speed with the connecting switch automatically. This is the default setting. You cannot configure port settings for vNIOS appliances.

     • DSCP Value: Displays the Grid DSCP value, if configured. To modify, click Override and enter the DSCP value. You can enter a value from 0 to 63. For information about DSCP, see Implementing Quality of Service Using DSCP.

5. Save the configuration and click Restart if it appears at the top of the screen.

Configuring DNS for IPv6 Addressing

Configuring the appliance to manage DNS services for IPv6 connections is similar to configuring DNS services for IPv4 connections. For simplicity, the IPv6 procedures are located in the same location as the corresponding procedures for IPv4 in this chapter. In most cases, the key difference within the procedure involves selecting an IPv6 mapping zone instead of an IPv4 mapping zone. You can configure the following tasks:
IPv6 DNS Configuration Checklist