EIGRP poison revrese.

Experts,

The explanation of poison reverse says that "Once you learn of a route through an interface, advertise it as unreachable back through that same interface.".

I tried to simulate the this in a Lab. I had Wireshark running on the link between the routers.

But I couldn't see any packets which advertises a route as unreachable.

Can you guys please help me to solve this puzzle?

Krishna