Cisco Systems 8.6 manual 4describes the IPv6 configuration menu options

Chapter 4 Configuring Settings on the Cisco Unified IP Phones

Network Configuration Menu

Table 4-4describes the IPv6 configuration menu options.

Table 4-4	IPv6 Configuration Menu Options
Option		Description	To Change
DHCPv6		Indicates whether the phone has DHCP enabled or	1.	Unlock network configuration
		disabled.		options.
		When DHCPv6 is enabled, the DHCPv6 server assigns the	2.	Scroll to the DHCPv6 option and
		phone an IPv6 address. When DHCP v6 is disabled, the		press the No softkey to disable
		administrator must manually assign an IPv6 address to the		DHCP, or press the Yes softkey
		phone.		to enable DHCP.
		The DHCPv6 setting along with the Auto IP Configuration	3.	Press the Save softkey.
		setting determine how the IP Phone obtains its network
		settings. For more information on how these two settings
		affect the network settings on the phone, see Table 4-5.
IPv6 Address		Internet Protocol version 6 (IPv6) address of the phone.	1.	Unlock network configuration
		The IPv6 address is a 128 bit address.		options.
		If you assign an IP address with this option, you must also	2.	Set the DHCPv6 option to No.
		assign the IPv6 prefix length and default router. See IPv6	3.	Scroll to the IP Address option,
		Subnet Prefix option in this table.
				press the Edit softkey, and then
				enter a new IP Address.
			4.	Press the Validate softkey and
				then press the Save softkey.
IPv6 Prefix Length		Subnet prefix length that is used by the phone. The subnet	1.	Unlock network configuration
		prefix length is a decimal value from 1-128, that specifies		options.
		the portion of the IPv6 address that comprises the subnet.	2.	Set the DHCPv6 option to No.
			3.	Scroll to the IPv6 Prefix Length
				option, press the Edit softkey,
				and then enter a new subnet
				mask.
			4.	Press the Validate softkey and
				then press the Save softkey.
IPv6 Default Router 1		Default router used by the phone (Default Router 1).	Display only—Cannot configure.
		Note The phone obtains information on the default
		router from IPv6 Router Advertisements.

	Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)
4-14	OL-23091-01