[pox-dev] Clear all flows from all switches

[Anderson Sartor]

I'm trying to clear all flows from the switches, but the flows are not
being removed.
I'm doing the following:
   msg = of.ofp_flow_mod(match=of.ofp_match(),command=of.OFPFC_DELETE)
   for connection in core.openflow._connections.values():
      connection.send(msg)

Why is this not working?

Thanks,