[nsp] gre tunnel using loopback for source

[Streiner, Justin]

On Mon, 2 Jun 2003, Eric Richard Knudson III wrote:

> Yeah, gre tunnels don't reflect an accurate status, I think I've seen
> them come up as soon as a valid source address was configured. You'll
> need gre keepalives to provide a mechanism to change the interface
> status:
>
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft
> /122t/122t8/grekpliv.htm

GRE tunnel keepalives are definitely a good thing.  The work fine on a
7206VXR running 12.2(15)T2.  I would have preferred to use a mainline
release, but I don't trust 12.3 yet and it's a real heavyweight on the flash,
bigger than most of the flash disks I have...

jms