NIC I219-V and strange message in the kernel log

[Georgi Naplatanov]

Hi all,

I have a motherboard with integrated network card Intel I219-V

This is the information from lspci:

00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2)
I219-V

but I can see a strange message (only one on every system restart). This
is the output of dmesg:

[    4.873221] IPv6: ADDRCONF(NETDEV_UP): enp0s31f6: link is not ready
[    7.699434] e1000e: enp0s31f6 NIC Link is Up 1000 Mbps Full Duplex,
Flow Control: Rx/Tx
[    7.699478] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s31f6: link becomes ready
[   10.237498] e1000e 0000:00:1f.6 enp0s31f6: Detected Hardware Unit Hang:
                 TDH                  <0>


                 TDT                  <1>


                 next_to_use          <1>


                 next_to_clean        <0>


               buffer_info[next_to_clean]:


                 time_stamp           <fffee268>


                 next_to_watch        <0>


                 jiffies              <fffee4c0>


                 next_to_watch.status <0>


               MAC Status             <40080080>


               PHY Status             <7949>


               PHY 1000BASE-T Status  <0>


               PHY Extended Status    <3000>


               PCI Status             <10>


[   10.633255] usb 1-13: reset high-speed USB device number 4 using xhci_hcd
[   11.463454] e1000e: enp0s31f6 NIC Link is Up 1000 Mbps Full Duplex,
Flow Control: Rx/Tx

I have not noticed any network problem but I'm curious why this message
appears in the kernel log.

I use Debian 10 (buster).

Kind regards
Georgi