On 26 May 2017 13:24, "Brian E Carpenter" <brian.e.carpenter@xxxxxxxxx> wrote:
So the draft
shouldn't assume a particular prefix length either. We all know that
it's usually 64 today, but that doesn't affect the argument made by
the draft.
It's always /64 for all addresses starting with binary 000, which cannot be assigned to hosts in a real network because they are unallocated space.
We need consistency with RFC 7608 (BCP 198).
No, we don't. RFC 7608 is about forwarding, not address assignment.