In your previous mail you wrote: > => the probability argument gives no guarantee. Nothing can give you full guarantees
=> globally unique IIDs give a full guarantee as I explained in a previous mail (with what is this guarantee). There is no option that always work, all the options work fine with a certain probability, The real question is if the probability that it fails is low enough. => no, the real question is who has to cleanup the mess when it fails. I prefer this guy has the control over the acceptable options too. And what does low enough means basically depends on the probablility of failure of the others elements related. So the question to be answered is if the probability of colision with random generated address identiers is low enough compared with the probability of failure of the other devices and protocols in the net. This is what we are trying to quantify. => there always is a difference between zero and not zero. It is also important to consider the cost, i.e. most of the times you can improve a solution (meaning that you can get a lower probability of failure) but this usually implies aditional costs, the question is if this is worthy. => worthy for who? If you takes the benefits and I have to take the problem in the case that should never happen but has just happened, my answer is a clear *no*. I mean whether you like it or not you are playing russian roulette :-), DAD can fail as well as all the other elements in your network => DAD is not perfect but my life is better with DAD than it would be without DAD. And I'd like to decide what is good for my network. This is the point I don't like at all in the MIPv6 I-D proposal, the MN user is not the person who may decide if he can avoid or defer DAD. Regards [EMAIL PROTECTED] -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
