Re: ping-pong phenomenon with p2p links & /127 prefixes

[Mark Smith <ipng@69706e6720323030352d30312d31340a.nosense.org>]

On Mon, 23 Aug 2010 14:11:04 +0200 (CEST)
sthaug@nethelp.no wrote:

> > These mechanisms are applicable to any type of link, would preserve the
> > simplicity of universal 64 bit IIDs and the other benefits of them e.g.
> > CGAs, as well as avoiding the ping-pong problem.
> 
> IMHO, the "universality" of 64 bit IIDs went down the drain the moment
> router vendors allowed longer than 64 bit netmasks to be configured.
> 

So how does that prevent those prefix lengths being changed to /64?

> For the routers I am most familiar with (Juniper, Cisco), longer than
> 64 bit netmasks have been configurable for many years. And such masks
> are heavily used for provider backbone links.
> 

As before, how does that prevent those prefix lengths being changed
to /64?

> The IPv6 standards community can of course continue to pretend a belief
> in universal 64 bit IIDs - thus ensuring that they are out of touch
> with IPv6 reality...
> 

Maybe that's your reality, but it isn't everybody's.