How do I setup the Ethernet port as an output?

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How do I setup the ethernet port as an output?

2

On Tue, 21 Aug 2018 16:15:04 -0700 (PDT),
n8nasan8@gmail.com declaimed the following:

How do I setup the ethernet port as an output?

https://www.google.com/search?q=tcp+socket+programming

  Ethernet is a bidirectional protocol, and shared among multiple
processes. It is not a simple I/O port (like UARTs) that one takes control
of.

https://www.google.com/search?q=ethernet+protocol