>
>NEW:
>    An IPv6 address from an assigned prefix is also required for the lwB4
>    to use as the encapsulation source address for the softwire.  In
>    order to enable end-to-end provisioning, the IPv6 address is
>    constructed by taking a /64 prefix assigned to the WAN interface
>    and suffixing 64-bits for the interface identifier.  As there may be
>    multiple WAN prefixes, of which only one can be used for lw4o6, the
>    CPE is provisioned with the knowledge of which one to take.  The /128
>    prefix is then constructed as follows:

[ian] I think that reads better. Can I suggest a slight wording tweak?:

s/knowledge of which one to take/logic to select the correct one

Cheers,
Ian


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