Dietpi v9.7 - Kernel v6 - NanoPi R5C Ethernet not working

[Schuetze1000]

Hello,
After updating to kernel version 6.6, I can no longer connect to the Internet.

The yellow LED only flashes on one of the two LAN ports. The other LAN port is not recognized.

I have also reinstalled the system twice and it still does not work. Maybe the information in the picture will help you:

Does anyone have a suggestion to fix the problem?
Thanks in advance !

[Joulinar]

You can try to set a STATIC IP address. Maybe this could help to work around the DHCP issue.

[boxer]

@Schuetze1000

Does anyone have a suggestion to fix the problem?

Try to ask Armbian developers who are behind all work.

[Schuetze1000]

Thanks for your suggestion. The Ethernet connection now works with both DHCP and Static IP, but only for about 5 minutes after system start. After that, all hosts become unreachable. I’ve also noticed that the MAC address changes with every restart, which causes the system to get a new IP address if i use DHCP.

Here is the dmesg output; I don’t think the last two lines should be there:

[    5.662447] r8169 0001:01:00.0 eth0: RTL8125B, 4e:f6:f4:05:a9:f7, XID 641, IRQ 80
[    5.675118] r8169 0001:01:00.0 eth0: jumbo features [frames: 9194 bytes, tx checksumming: ko]
[   12.276380] r8169 0001:01:00.0 eth0: Link is Down
[   67.240285] r8169 0001:01:00.0 eth0: Link is Down
[   78.441065] r8169 0001:01:00.0 eth0: Link is Up - 1Gbps/Full - flow control rx/tx
[  212.968070] NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out 8448 ms
[  212.970264] r8169 0001:01:00.0 eth0: ASPM disabled on Tx timeout