Alain Durand <[EMAIL PROTECTED]> writes: > On Feb 27, 2004, at 5:23 PM, Thomas Narten wrote: > > > > Let me ask you this then. If the word "permanent" is not appropriate, > > what word is? To me, "not permanent" means that at some future time an > > allocation that has been made to an endsite may be revoked.
> The point I'm arguing is that it is not the IETF business to decide > this. I respectfully disagree. Seems to me that whether or not assignment should be permanent is a property of the type of address we are defining and goes to heart of why we are defining unique local addresses. My understanding is that end sites are supposed to be able to use them however they see fit, and specifically will _not_ have to worry about someone reclaiming them or taking them away. If an end site has to worry that it may have to give up the address at some future time, these addresses have just become a lot less attractive (or useful). Thus, it is important that the assignments effectively be permanent. > So not saying anything is probably the best option. Another one is > saying that the entity in charge of the allocation is required to > provide those allocation for the long term and not specify anything > further. It is a policy decision made by the entity(ies) in charge > to decide what long term means. Letting the entity that operates this service decide the terms of the address (how long an assignment is good for, under what terms it should be reclaimned, etc.) without any sort of guidance is a recipe for creating a bad situation that we cannot fix. I.e., we get a service that isn't what this WG intended and that we can't fix it because we don't control it (e.g., in a worst case scenario, a newly created monopoly accountable to nobody). > See the contract between the chosen entity and the customer. > Again, this is policy, not protocol. i.e. this is not IETF business. Are you really suggesting that some third party (not under IETF direction) define the policy, even if the result of the policy could defeat the purpose of having such addresses? > > Is > > there some future scenario we're worried about where it becomes > > important to be able to reclaim these addresses? I.e., are they ever > > going to become a scarce resource? > I'm worried about the scenario where IETF does policy and not protocols > anymore. I believe you are confusing properties with policy. One can't completely separate the two. If you look at CIDR, we've moved to address leasing because we don't know (technically) how to do global routing if all address assignments are permanent. In the case of unique local addresses, there are no technical issues with making such assignments permanent (or do you disagree?). Thus, there is no reason why we can't make such assignments permanent. (Note: I'd agree with you that the assignments shouldn't be permanent if there was a case to be made that it may become necessary to reclaim them at some future time. Is there?) Thomas -------------------------------------------------------------------- IETF IPv6 working group mailing list [EMAIL PROTECTED] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
