On Fri, Feb 24, 2017 at 7:43 AM, Pierre Pfister <pierre.pfister@xxxxxxxx> wrote:
> The thing is this is not new text, it has been in RFC4291 for 11
> years. c.f., 2.5.1.
And during those 11 years. Nobody implemented this rule specific to ::/3.
I can implement it today in some of our code if you like :-). But it seems unlikely to make a difference, since the rule only applies to unicast addresses in ::/3, and no such addresses have been released to the RIRs. That in turn is unlikely to change until we run out of 2000::/3, and even then we'll likely move on to allocating addresses out of 4000::/3 instead of from ::/3.