[c-nsp] temporary static routes

[Cord MacLeod]

I'm looking to inject static routes for a particular period of time  
into a router then have them expire after a given amount of time.

For instance ip route xxx.xxx.xxx.xxx 255.255.255.255 Null0, and have  
this line removed after 24 hours.  Would IOS have a way to do this, or  
am I looking at having to script this?

I'm running 12.2(25)SEB4, RELEASE SOFTWARE (fc1).