Device EUI (Constant or Variable)

Just want to get confirmation that the device EUI is a constant value for each device on the network. This means that it does not change weather over the air activation or activation by person is used.
Can someone just confirm or inform me otherwise.
Thank you in advance.


what I’m going to say is a nonsense but Device EUI can be both Constant or Variable.

The most of time it’s Constant, but nothing prevents you to create a function which allows to change dynamically the Device EUI and then redo a join server…

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