Enabling or Disabling an IPv6 Interface

You can enable or disable an IPv6 interface at any time.

Before you configure IPv6, you must create the lower-layer interfaces over which IPv6 traffic flows. By default, an IPv6 interface is enabled when you first create it.

To enable an IPv6 interface:

• Issue the ipv6 enable command in Interface Configuration mode.
  host1(config-if)#ipv6 enable

  Use the no version to disable IPv6 on an interface or a subinterface.