traceflow crash - MacBook

[mpenning]

I tried traceflow on my MacBook and it crashed... looks like setsockopt(socket.SOL_SOCKET, SO_TIMESTAMPNS, 1) is not supported on OSX...

ref -> https://stackoverflow.com/a/46330410/667301

Full OSX crash info:

% sudo traceflow 4.2.2.2
Resolved 4.2.2.2 to 4.2.2.2
Traceback (most recent call last):
  File "/Users/mpenning/py39_default/bin/traceflow", line 8, in <module>
    sys.exit(main())
  File "/Users/mpenning/py39_default/lib/python3.9/site-packages/traceflow/__main__.py", line 164, in main
    listener = traceflow.socket_listener(daddr)
  File "/Users/mpenning/py39_default/lib/python3.9/site-packages/traceflow/socket_handler.py", line 82, in __init__
    self.icmp_listener.setsockopt(socket.SOL_SOCKET, SO_TIMESTAMPNS, 1)
OSError: [Errno 42] Protocol not available