Re: Raspberry Pi 4 ethernet issues with latest UEFI and 11.0_RC6

John Klos <[email protected]> Fri, 31 Jul 2026 18:58:41 +0000 (UTC)
Newsgroups gmane.os.netbsd.ports.arm
Message-ID <[email protected]>
> Have you seen some messages like this in dmesg?
>
>> [     1.000004] genet0: Ethernet address f5:77:00:f2:3a:3b
>> [     1.000004] autoconfiguration error: The multicast bit is set in the MAC address. It's wrong.
>
> If uefi firmware is v1.41 or later, RD4(UMAC_MAC[01]) return 0.
> genet_get_eaddr() tries to invent mac address, but it needs htobe().

I haven't seen that, but I will check to see if the MAC is ever different 
from one boot to another.

John