[c-nsp] Loss of Telnet Capability to 6509

[Tuc]

> 
> That is the interesting part. A Who shows a single connection on vty 2
> (a sh line vty 2 seems to agree) but a clear line vty 2 (with a confirm)
> fails to reset the line. The connection still shows active, however idle
> for about 6 hours.
> 
	We had this happen to us when we had memory issues with the router.
We found looking at the logs that there wasn't any memory to support the
process.