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gh-100231: Clarify AF_PACKET protocol byte order #154741

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gh-100231: Clarify AF_PACKET protocol byte order #154741

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7 changes: 4 additions & 3 deletions Doc/library/socket.rst
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Expand Up @@ -586,9 +586,10 @@ The AF_* and SOCK_* constants are now :class:`AddressFamily` and

.. data:: ETH_P_ALL

:data:`!ETH_P_ALL` can be used in the :class:`~socket.socket`
constructor as *proto* for the :const:`AF_PACKET` family in order to
capture every packet, regardless of protocol.
To capture every packet, regardless of protocol, with an
:const:`AF_PACKET` socket, pass ``htons(ETH_P_ALL)`` as *proto* to the
:class:`~socket.socket` constructor. The call to :func:`htons` converts
the protocol number to network byte order.

For more information, see the :manpage:`packet(7)` manpage.

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