I am not able to activate DHCPv6 on my Cisco Router 881 (Version 15.2(2)T). There is no ipv6 dhcp ... in global config mode.
Cisco feature navigator tells me there is dhcpv6..
access-list Configure access lists
cef Cisco Express Forwarding for IPv6
flowset Set flow label random for originated packets
general-prefix Configure a general IPv6 prefix
hop-limit Configure hop count limit
host Configure static hostnames
icmp Configure ICMP parameters
inspect Context-based Access Control Engine
local Specify local options
nat NAT-PT Configuration commands
nd Configure IPv6 ND
port-map Port to application mapping (PAM) configuration commands
prefix-list Build a prefix list
radius RADIUS configuration commands
route Configure static routes
router Enable an IPV6 routing process
source-route Process packets with source routing header options
spd Selective Packet Discard (SPD)
tacacs TACACS configuration commands
traffic Configure traffic parameters
unicast-routing Enable unicast routing
What's wrong with my box?
Currently, the DHCPv6 server is only available in the Advanced IP services feature on the 800 series platform.
Here is the data sheet for feature to license mapping:
I don't know if there are any plans in the future to change it, but what you are seeing today is the expected and intended behavior.