> Does the community feel that operators need RA bits that > control/indicate whether a client is to invoke DHC? That is, is there > a need for the sys admin to signal to client whether DHC is to be > invoked?
yes. > > Second, is it important that such a signal be honored by clients? > (That is, if clients end up mostly ignoring the flags, does their > presence become useless?) That is not our business but yes I believe the market and clients will honor them as requirement from the organizations policy using stateful or other config info. > > For example, should the sys admin be able to say "do not run DHC, > doing so wastes local resources and won't get you any config info"? > (And should that be honored by clients?) Sure just don't set the current bits in RAs. > > Fundamentally, it is only the access network that has knowledge of > whether running DHC is useful. Thus, by default, clients (arguably) > can't know whether running DHC is useful, so by default they shold > invoke DHC (unless the sys admin signals "don't invoke DHC"). I think the m or o bit will be the decision policy point. > > Or (switching the argument), by default, client should not invoke DHC, > unless the local sys admin indicates doing so is appropriate. Corrrect same as question above. > > If we can't agree that the above is necessary (i.e., is a "problem > statement" of sorts), I really have to wonder what purpose the R/A > bits can serve or whether we will ever have a shared understanding of > what they are supposed to do. Having them be a hint (that clients in > practice ignore half the time) would seem to solve no useful purpose > (IMO) and would provide the sys admin with useless tools (since > clients wouldn't respond to the usage of the tool in predicatable > ways). The result would simply be more confusion. (Oh, that is already > the state we are in!!! :-)) We agreed on this years ago. /jim > > So, what is it? > > Thomas > > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- > -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
