am d6c67966: nexus: Rename onInterfaceStarted -> onInterfaceConnected and add Dhcp start/stop control

Merge commit 'd6c6796670a5e566977b13d542020fb8cc88e6cf'

* commit 'd6c6796670a5e566977b13d542020fb8cc88e6cf':
  nexus: Rename onInterfaceStarted -> onInterfaceConnected and add Dhcp start/stop control