<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Mon, Apr 21, 2014 at 11:34 AM, Tore Anderson <span dir="ltr"><<a href="mailto:tore@fud.no" target="_blank">tore@fud.no</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
These requirements are in my opinion out of touch with operational<br>
reality; networks evolve and change over time, and given enough time,<br>
pretty much all assignments made will end up being used in a different<br>
way than what the original criteria was. The PI assignment request form<br>
asked for an very detailed criteria, with a breakdown of each individual<br>
subnet in the network, and a listing of all the equipment that would be<br>
used, including the manufacturer name and model numbers. So if you in<br>
the 1990s received an assignment that you had said was for a dozen brand<br>
new Sun UltraServers, you better not have replaced those with modern x86<br>
hardware, or you have invalidated your assignment! :-O<br>
<br>
Some NCC staffers have told me that the way they've logically "solved"<br>
this impossible requirement was to consider that whenever the<br>
criteria/purpose changed, the original assignment was returned, and a<br>
new one consisting of the same block was issued for the new purpose.<br>
Then they could just "optimise out" the middle steps where the<br>
assignment was removed and re-added. That approached worked (up until<br>
Sep 2012 anyway), but I think it would be much better if the policy<br>
didn't worry so much about the "original criteria", but rather focus on<br>
whether or not the assignment conforms to the address policy in effect<br>
at any given time. If it does, there is no reason to call it invalid.<br><br></blockquote><div><br></div><div>Well said.</div><div><br></div><div>When specifying a purpose for a use, it is quite difficult to provide something that is generic enough to last for the lifetime of operations, rather than the lifetime of something else entirely. </div>
</div><div><br></div>-- <br>Jan
</div></div>