RE: Polling for new WG I-Ds

["Drake, John E" <John.E.Drake2@boeing.com>]

> 
> JD:  Except that we go to great pains to ensure that this 
> situation never occurs. 
> 
> You are right, we do. In theory such situations should not 
> happen, however, we all know that in practice there are 
> always cases when original (especially proprietary) protocol 
> solutions are not thought through enough, and it is 
> impossible to maintain backward compatibility between the 
> software releases. That's why I am talking about *major* 
> upgrades. Furthermore, sometimes there is a need to actually 
> downgrade software, for instance, when one wants to add to 
> the network some older equipment.

Why would anyone want to do this, especially without upgrading this
equipments' software?

> Again, the ability to do 
> the CP->MP->CP trick would help

Except that, as Lyndon and Deborah pointed out, the CP->MP->CP trick has
perils of its own.