Hi Francois:
Thanks for answering.
If it's an XID 98000000 - i.e. old new hardware - you may try to remove
the device then rescan the PCI bus through sysfs.
dmesg says "eth0: RTL8110s at 0xffffc2000067ec00, 00:4f:4a:10:1e:cf, XID
04000000 IRQ 16".
Building a modern kernel is strongly suggested if the hardware includes a
recent 816x chipset.
Is there any particular patch I could apply and just recompile the driver?
My hope was to first receive feedback and identify some probably related
known bug, in order to avoid searching for a solution by trial and error or
by updating the whole environment.