Utility function to convert a SList of IP6Address objects into a GenericArray of ValueArrays representing a list of NetworkManager IPv6 addresses (which is a tuple of address, prefix, and gateway).
The specific format of this serialization is not guaranteed to be stable and may be extended in the future.
| list |
a list of IP6Address objects |
| value |
a pointer to a Value into which to place the converted addresses, which should be unset by the caller (when no longer needed) with unset. |