Hi Heiner,

On 30/06/2019 19:42, Heiner Kallweit wrote:

Vendor driver uses this code, do you see the related messages in syslog?

        if (!is_valid_ether_addr(mac_addr)) {
                netif_err(tp, probe, dev, "Invalid ether addr %pM\n",
                          mac_addr);
                eth_hw_addr_random(dev);
                ether_addr_copy(mac_addr, dev->dev_addr);
                netif_info(tp, probe, dev, "Random ether addr %pM\n",
                           mac_addr);
                tp->random_mac = 1;
        }

did the following:

# cat /var/log/messages |grep -i Invalid
Jun 30 08:54:00 praktifix kernel: [    0.229213] DMAR-IR: Queued
invalidation will be enabled to support x2apic and Intr-remapping.
Jun 30 08:54:00 praktifix kernel: [   23.864072] Invalid pltconfig,
ensure IPC1 device is enabled in BIOS
Jun 30 10:17:30 praktifix kernel: [    0.228662] DMAR-IR: Queued
invalidation will be enabled to support x2apic and Intr-remapping.
Jun 30 10:17:30 praktifix kernel: [   24.198033] Invalid pltconfig,
ensure IPC1 device is enabled in BIOS

But that does not relate to your error.

# cat /var/log/messages |grep -i random
Jun 30 08:54:00 praktifix kernel: [    0.228092] random: crng done
(trusting CPU's manufacturer)
Jun 30 10:17:30 praktifix kernel: [    0.227534] random: crng done
(trusting CPU's manufacturer)
Jun 30 10:25:53 praktifix kernel: [  527.540354] r8168 0000:02:00.0
(unnamed net_device) (uninitialized): Random ether addr 82:c2:81:10:6b:c2

The last one probably results from my testing with r8169. The compiled
r8168 went online later. That also is the only message I found.

Thank you for your help in debugging.

Regards and greetings from Hamburg,
Karsten