The man page for
ifdown roughly states (depending on the source of the man page):
The ifup and ifdown commands may be used to configure (or, respectively deconfigure) network interfaces based on interface definitions in ...
I'm not clear if the interface is "administratively" down or if its "powered" down.
My first question is, does
ifdown power down the interface so that its not drawing any power?
My second question is, if the interface still receiving power, then how can I remove power from the interface?
I suspect the answer to the first question is going to be "maybe", and the second question is "it depends" based on the the chip and the driver. But I'd like feedback from those more experienced. Also note that physically removing an interface is not an option because it is soldered to the board.