Why do we care about u and g in the first place? Is there code in an IPv6 router or host that interprets them?
On Dec 18, 2012, at 3:50 PM, Joel M. Halpern wrote: > In reading the discussion,a nd trying to think through what I understand to > be correct, it seems that there is an unforeseen ambiguity in the way the > current documents about IPv6 IIDs are written. > > I think that there are two possible meanings, ad we should decide explicitly > which one we want. > > 1) u=1 means that the IID is derived from an IEEE OUI (of some form). With > that meaning, u=1, g=1 is clearly some sort of multi-entity identifier. And > we should say that somewhere. > > 2) u=1, g=1 was unforeseen, and we don't know what it means. In that case, > we ought to figure out how we want that portion of the IID space used, and > write it down clearly. It seems to me that allowing this space to be used > for special-semantic IIDs (with suitable care so that the entire ecosystem is > not affected by them) is a very reasonable path. > > It seems unlikely that there is actual practice in the wild with u=1, g=1 > under either interpretation. We do now have a request to start using it > (4rd). So we should decide. > > Yours, > Joel > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > [email protected] > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- ---------------------------------------------------- The ignorance of how to use new knowledge stockpiles exponentially. - Marshall McLuhan -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
