[c-nsp] Feature request

[matt carter]

> 
> Disruptive means different things to different people.
> If you define disruptive as losing a single packet it can't 
> be done today.
> 

presuming we're talking scheduled work as mentioned i'd argue you could
could can quite comfortable do this without a single packet drop simply by
adjusting the metrics and resulting flow paths allowing you to effect a
graceful removal of the device you are going do perform work on, before you
do the work??? make before break, or have i got my wires crossed somehow..

--matt