Configuring an IPv6 License

You must configure an IPv6 license before you can use any IPv6 commands on the E Series router.

license ipv6

Use to specify an IPv6 license.
Purchase an IPv6 license to allow IPv6 configuration on the E Series router.
Note: Acquire the license from Juniper Networks Customer Services and Support or your Juniper Networks sales representative.
Example
host1(config)#license ipv6 license-value
Use the no version to disable the license.
See license ipv6