Indra Talip <indra.ta...@gmail.com> added the comment:

The current code and proposed changes use 'netstat -ia' to find the node 
however if netstat needs to perform a reverse DNS query to resolve some 
interfaces this makes using uuid1 *really* slow especially when reverse DNS 
queries aren't set up correctly or timeout.
   mac = _find_mac_netstat('netstat', '-ia', b'Address', lambda i: i)

Would it be possible to change the netstat call to add 'n' to the nestat 
options, i.e. _find_mac_netstat('netstat', '-ian', ...) to prevent netstat from 
attempting to resolve addresses?

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nosy: +italip

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue28009>
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