Here are the latest test results with different chipsets on the alx/atl1c Ethernet driver.
Kernel 3.3.0+ / alx
/etc/net is a new way to configure networks. It is designed to let you use all modern Linux network technologies in a convenient way. The best way to learn /etc/net is to look at examples, which I will try to provide for most technologies mentioned at LinuxNet pages.
You can find more information at the project's home page and freshmeat page.
I created a bridge that include eth0 and the bridge in preparation to setup Qemu with a bridged interace to the network.
ifconfig eth0 0.0.0.0 promisc up
brctl addbr br
ifconfig br 172.16.2.1 netmask 255.255.255.0 up
I have echoed 1 in /proc/sys/net/ipv4/conf/eth0/proxy_arp
I finish setting this up and evrything is fine. I ping the default gateway of the machine in the network attached to the eth0 interface and I get excellent replies.
Here is the problem, I vnc to 172.16.2.1 and once I do that, I loose communication with 172.16.2.1.