BAD GADGET : No Solution

2 1 0

2 0

1 3 0

1 0

3 4 2 0

3 0

4 2 0

4 3 0

With a BGP-like

protocol, each node

will do the best it

can, so at least one

node will always have

the opportunity to

improve its path.

Result :

persistent oscillation.