All A64 boards have the same MAC address

[jech]

All A64 boards have the same Ethernet address (02:ba:7b:d5:c6:6f), which prevents them from being connected to a single switch. What's more, uBoot is configured so that the ethaddr variable cannot be overridden. A workaround is to override the MAC address in /etc/network/interfaces.

While this is obviously a hardware bug, it would be neat if it could be fixed in software. That requires modifying the uBoot configuration so the ethaddr can be changed, and doing some magic to use a distinct yet stable MAC address per board. (If the address is not stable, environments in which reboots are common will exhaust DHCP ranges pretty fast).

[stefansaraev]

thanks for reporting this @jech, we will update u-boot config to allow changing ethaddr in env.

[stefansaraev]

done. package is already in repo, please do

apt-get update && apt-get dist-upgrade
u-boot-install

[jech]

I couldn't get it to work from uBoot:

=> saveenv                                                                      
Saving Environment to EXT4... MMC: no card present                              
Failed (1)

On the other hand, editing /boot/uEnv.txt from Linux did the right thing.

[stefansaraev]

yeah, there are some hacks on where env is stored. I think it may not be easy to fix. need to look at this later :(