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siemens / mtda

Multi-Tenant Device Access
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the mac address on the nanopi-r1 changes from boot to boot #213

Open GuBi34 opened 2 years ago

GuBi34 commented 2 years ago

The nanopi-r1 provides every boot a different MAC address.

Reproduction: Build mtda for nanopi-r1 Flash the card Boot Login -> readout ip addr Power off/on Login -> readout ip addr

chombourger commented 2 years ago

and so does the NEO

GuBi34 commented 2 years ago

On my nanopi-neo tha MAC address appears to be unchanged after power cycling It is alway registered in the known_hosts and receives the same IP address on my hom router (not so for the nanopi-r1) so there seem to be some differences. Obviously the changing MAC causes difficulties at least if the setup is not configured for fixed IP on the device.

chombourger commented 2 years ago

you could do this:

nmcli con modify 'Wired connection 1' 802-3-ethernet.cloned-mac-address 00:12:34:56:78:9a

for NetworkManager to use a custom MAC address. We can add this to the FAQ We could also implement a systemd service to somehow derive a MAC address from the serial number of the CPU

GuBi34 commented 2 years ago

Probably the the auto generation of a random MAC provides sufficient added value to be considered?! - anyhow I try to follow your advice to change the connection manually besides of this!

chombourger commented 2 years ago

Probably the the auto generation of a random MAC provides sufficient added value to be considered?! - anyhow I try to follow your advice to change the connection manually besides of this!

indeed. I have started to work on a systemd service to derive a MAC address from the serial number of the CPU

chombourger commented 2 years ago

note: not finding to work on this right now :(