I am using Cisco Packet Tracer to build a network. I need one router that has 4 GigabitEthernet interfaces whith command "ipv6 address ..." is available to assign ipv6 IP address. I have checked all routers in Cisco Packet Tracer, only router 829 (IR800) has more than 3 GigabitEthernet interfaces. But only GiabitEthernet0 and 5 have "ipv6 address ..." command available. How can I assign ipv6 address to other GigabitEthernet interfaces? Any advice is greatly appreciated!
Here are output from interface GigabitEthernet 1, command "ipv6 address ...." is not available:
IR800(config)#int gi 1
cdp Global CDP configuration subcommands
description Interface specific description
duplex Configure duplex operation.
exit Exit from interface configuration mode
mac-address Manually set interface MAC address
no Negate a command or set its defaults
power Power configuration
shutdown Shutdown the selected interface
spanning-tree Spanning Tree Subsystem
speed Configure speed operation.
storm-control storm configuration
switchport Set switching mode characteristics