BGP IPv6 command 'neighbor X:X::X:X activate' is not implemented

[xivamar]

The command neighbor 2002:0:0:0:0:0:6500:1 activate isn't implemented:

      switch(config)# router bgp 64500 
      switch(config-router)# neighbor 2002:0:0:0:0:0:6500:1 remote-as 64501
      switch(config-router)# address-family ipv6
      switch(config-router-af)# neighbor 2002:0:0:0:0:0:6500:1 activate
      This command is not yet implemented but here are the parameters:
      argc = 1
         arg 0: 2002:0:0:0:0:0:6500:1
      switch(config-router-af)#