Hi,

I think this regression is not yet solved.

I encounter this or a similar problem with an PC Engines APU.1C device
(see: http://pcengines.ch/apu.htm). It has 3 network interfaces each
requiring the r8169 kernel module.

With 4.0.0-rc4 I get this error message at boot (for each of the 3 devices):

[    3.562301] r8169 0000:01:00.0 (unnamed net_device) (uninitialized):
rtl_chipcmd_cond == 1 (loop: 100, delay: 100).

"ifconfig -a" shows ff:ff:ff:ff:ff:ff as MAC address for each of the
interfaces (see eth0 as example):

eth0      Link encap:Ethernet  HWaddr ff:ff:ff:ff:ff:ff
          BROADCAST PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

The network interfaces cannot be brought up/used.

The same device and setup did work with a previously used 3.18.0-rc5
kernel. When I boot it with this 3.18.0-rc5 kernel everything i OK,
interfaces come up and work.

Please find attached:
-> dmesg output when starting device with kernel 4.0.0-rc4
-> dmesg output when starting device with kernel 3.18.0-rc5
-> lspci of the device

I am happy to assist with testing and try to provide any information needed.

Regards,
Bernhard