On Feb 13, 2017, at 2:53 PM, Brian E Carpenter
<brian(_dot_)e(_dot_)carpenter(_at_)gmail(_dot_)com> wrote:
However, the Interface ID of unicast addresses used for
Stateless Address Autoconfiguration [RFC4862] is required
to be 64 bits long.
To my understanding, that is exactly the case with SLAAC. One could use the
algorithm with any number one chose, but the chosen number is 64. Restricting
the limitation to algorithms that require such a limitation makes sense to me.
Extending it from there to algorithms that have no such limitation doesn't.