Raspberry PiのMACアドレスはEEPROMなどから読み込んではいないようです。 xinu/docs/arm/rpi/SMSC-LAN9512.rst at master · xinu-os/xinu · GitHub には次のように書いています。 To have a predetermined MAC address, a given SMSC LAN9512 must be attached to an EEPROM that contains the MAC address. But on the Raspberry Pi Model B, this EEPROM is not present; therefore, this driver must assign a MAC address itself. We do this by generating a MAC ad