docs: def _parse_solaris_netstat(self, netstat_output):
          """
          Return a mapping of network metrics by interface. For example:
              { interface:
                  {'bytes_sent': 0,
                    'bytes_rcvd': 0,
                    'bytes_rcvd': 0,
                    ...
                  }
              }
          """
          # Here's an example of the netstat output:
          #
          # link:0:net0:brdcstrcv   527336
          # link:0:net0:brdcstxmt   1595
          # link:0:net0:class       net
          # link:0:net0:collisions  0
          # link:0:net0:crtime      16359935.2637943
          # link:0:net0:ierrors     0
          # link:0:net0:ifspeed     10000000000
          # link:0:net0:ipackets    682834
          # link:0:net0:ipackets64  682834
          # link:0:net0:link_duplex 0
          # link:0:net0:link_state  1
          # link:0:net0:multircv    0
          # link:0:net0:multixmt    1595
          # link:0:net0:norcvbuf    0
          # link:0:net0:noxmtbuf    0
          # link:0:net0:obytes      12820668
          # link:0:net0:obytes64    12820668
          # link:0:net0:oerrors     0
          # link:0:net0:opackets    105445
          # link:0:net0:opackets64  105445
          # link:0:net0:rbytes      113983614
          # link:0:net0:rbytes64    113983614
          # link:0:net0:snaptime    16834735.1607669
          # link:0:net0:unknowns    0
          # link:0:net0:zonename    53aa9b7e-48ba-4152-a52b-a6368c3d9e7c
          # link:0:net1:brdcstrcv   4947620
          # link:0:net1:brdcstxmt   1594
          # link:0:net1:class       net
          # link:0:net1:collisions  0
          # link:0:net1:crtime      16359935.2839167
          # link:0:net1:ierrors     0
          # link:0:net1:ifspeed     10000000000
          # link:0:net1:ipackets    4947620
          # link:0:net1:ipackets64  4947620
          # link:0:net1:link_duplex 0
          # link:0:net1:link_state  1
          # link:0:net1:multircv    0
          # link:0:net1:multixmt    1594
          # link:0:net1:norcvbuf    0
          # link:0:net1:noxmtbuf    0
          # link:0:net1:obytes      73324
          # link:0:net1:obytes64    73324
          # link:0:net1:oerrors     0
          # link:0:net1:opackets    1594
          # link:0:net1:opackets64  1594
          # link:0:net1:rbytes      304384894
          # link:0:net1:rbytes64    304384894
          # link:0:net1:snaptime    16834735.1613302
          # link:0:net1:unknowns    0
          # link:0:net1:zonename    53aa9b7e-48ba-4152-a52b-a6368c3d9e7c
  
          # A mapping of solaris names -> datadog names
          metric_by_solaris_name = {
              'rbytes64': 'bytes_rcvd',
              'obytes64': 'bytes_sent',
              'ipackets64': 'packets_in.count',
              'ierrors': 'packets_in.error',
              'opackets64': 'packets_out.count',
              'oerrors': 'packets_out.error',
          }
  
          lines = [l for l in netstat_output.splitlines() if len(l) > 0]
  
          metrics_by_interface = {}
  
          for l in lines:
              # Parse the metric & interface.
              cols = l.split()
              link, n, iface, name = cols[0].split(":")
              assert link == "link"
  
              # Get the datadog metric name.
              ddname = metric_by_solaris_name.get(name, None)
              if ddname is None:
                  continue
  
              # Add it to this interface's list of metrics.
              metrics = metrics_by_interface.get(iface, {})
              metrics[ddname] = self._parse_value(cols[1])
              metrics_by_interface[iface] = metrics
  
          return metrics_by_interface