I'm having trouble enabling IPv6 on Cisco 3825 router. I'm running IOS version 12.4(3a) and when I try to enable ipv6 I get the usual "Invalid input" Error message:
Router(config)#ipv6 unicast-routing ^ %Invald input detected at '^' marker
The only problem I can think of is the IOS version. But since it's12.4 I think it couldn't be the problem.
Any help would be appreciated.