6 Mar
2016
6 Mar
'16
7:10 a.m.
* Saku Ytti
Yes, SLAAC, 4862 clearly does not forbid it, and there is no technical reason. But as you state, 2464 does not specify other behaviour. Writing new draft which specifies behaviour for arbitrary size wouldn't be a challenge, marketing it might be.
FYI: RFC 7421 is an in-depth discussion of the fixed 64-bit boundary. Tore