Usage: %1!s! interface= address= type=]unicast|anycast validlifetime= |infinite preferredlifetime= |infinite store=]active|persistent ...

Usage: %1!s! [interface=] [address=]
             [[type=]unicast|anycast]
             [[validlifetime=]|infinite]
             [[preferredlifetime=]|infinite]
             [[store=]active|persistent]

Parameters:

       Tag                 Value
       interface         - Interface name or index.
       address           - IPv6 address to modify.
       type              - One of the following values:
                           unicast: Marks the address as a unicast address.
                                    This is the default.
                           anycast: Marks the address as an anycast address.
       validlifetime     - Lifetime over which the address is valid.
                           The default value is infinite.
       preferredlifetime - Lifetime over which the address is preferred.
                           The default value is infinite.
       store             - One of the following values:
                           active: Set only lasts until next boot.
                           persistent: Set is persistent (default).

Remarks: Modifies an IPv6 address on a given interface.  Time values can
         be expressed in days, hours, minutes, and seconds; e.g. 1d2h3m4s.

Example:

       %1!s! "Private" fe80::2 anycast