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/
