docs: def ethernet_connected_chips(self):
          """Iterate over the coordinates of Ethernet connected chips.
  
          Yields
          ------
          ((x, y), str)
              The coordinate and IP address of each Ethernet connected chip in
              the system.
          """
          for xy, chip_info in six.iteritems(self):
              if chip_info.ethernet_up:
                  yield (xy, chip_info.ip_address)