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installation: add note about unsupported locally administered MAC addresses (backport #1584) #1585

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9 changes: 9 additions & 0 deletions docs/installation/index.rst
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,16 @@
Installation and Image Management
#################################

.. note:: This is most likely only relevant for virtual installations:

When installing VyOS ensure that the MAC address selected for your NICs is
not a locally administered MAC address. Locally administered addresses are
distinguished from universally administered addresses by setting (assigning
the value of 1 to) the second-least-significant bit of the first octet of
the address:

Example: ``02:00:00:00:00:01``, where the second-least-significant bit
(``02`` in hex) is set to ``1``.

.. toctree::
:maxdepth: 2
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