[issue30430] Cannot write to a tun interface file

[Rémy Léone]

Rémy Léone added the comment:

I've tackle the 1. by replacing write/open with os.write/os.open. I still get :
$ python3 simple_incorrect.py
b'\xc3\xa9'
Traceback (most recent call last):
  File "simple_incorrect.py", line 32, in <module>
    os.write(tun, incorrect_frame)
OSError: [Errno 22] Invalid argument

I'm going to study more in depth the point you raised about tun.c

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Added file: http://bugs.python.org/file46886/simple_incorrect.py

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<http://bugs.python.org/issue30430>
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