Dear Maintainer,

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   * What exactly did you do (or not do) that was effective (or
     ineffective)?
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"PATCH forcedeth bug fix: realtek phy 8211c errata"
http://lists.openwall.net/netdev/2008/07/25/127
http://lists.openwall.net/netdev/2008/07/29/91

I have discovered that the problem appears when I try to obtain one
automatic IP version 4 from one network card (Realtek onboard) or the
other (Dlink offboard) or both.
After a long time, the computer turns on, but no real network connection
is possible even though one or two NICs have a corret IP number provided
from the dhcp server:
----------
#vi /etc/network/interfaces
---
# The primary network interface
auto eth0 eth1
allow-hotplug eth0 eth1
iface eth0 inet dhcp

# The secondary network interface
iface eth1 inet dhcp
---
----------

When I use static IP numbers (version 4) on one network card (Realtek
onboard) or the other (Dlink offboard) or both, the computer turns on
fast and real network connection is created and I can use the Internet
and connect to and from others computers on my local network via SSH and
SAMBA 4.1.
I cannot put gateway information on the Realtek card. When I do, both
network connections stop working and my computer gets isolated from the
rest of my local network.
Although everything seems fine, the computer freezes when I try to reset
it (#shutdown -r now) or turn it off (shutdown -h now):
----------
#vi /etc/network/interfaces
---
# The primary network interface
auto eth0 eth1
allow-hotplug eth0 eth1
iface eth0 inet static
 address 192.168.0.100
 netmask 255.255.255.0
 # gateway 192.168.0.1

# The secondary network interface
iface eth1 inet static
 address 192.168.0.200
 netmask 255.255.255.0
 gateway 192.168.0.1
---
----------

------------------------------------------------
Extra information that maybe helpful:

"The Realtek RTL8211E is a RGMII 10/100/1000 Ethernet PHY, which is
gigabit capable. It is commonly paired with GMAC for gigabit speeds.
Generic PHY support is enough to make it work."
http://linux-sunxi.org/Ethernet

http://ircbots.debian.net/factoids/factoid.php?key=rtl8211cl

"PATCH forcedeth bug fix: realtek phy 8211c errata"
http://lists.openwall.net/netdev/2008/07/25/127
http://lists.openwall.net/netdev/2008/07/29/91

http://www.cs.fsu.edu/~baker/devices/lxr/http/source/linux/drivers/net/forcedeth.c
http://plugable.com/2010/10/18/howto-asix-88178-usb-ethernet-adapter-on-ubuntu-10-10-linux
https://packages.debian.org/search?searchon=contents&keywords=forcedeth.ko&mode=exactfilename&suite=stable&arch=any
http://unix.stackexchange.com/questions/97974/how-do-i-remove-acpi-warning-on-boot

"The forcedeth story"
http://liquidat.wordpress.com/2007/03/04/the-forcedeth-story/