Implement non-stop monitoring of the installed flow.
If the shortest path changes, the old flow is deleted,
and a new one is installed.

Currently, this is implemented by computing the shortest path
periodically (once a second).

The (new) monitoring feature can be enabled by using the "-m" argument.
Example:

./add_flow.py -m 1 FOOBAR 00:00:00:00:00:00:01:01 1 00:00:00:00:00:00:01:31 1 matchDstMac 01:02:03:04:05:06
1 file changed