Networking - multiple nics not setting up

Nils Kassube kassube at
Tue Nov 27 23:10:36 UTC 2007

Bill wrote:
> The thing is there should be an eth1 interface set up.

In the file /etc/udev/rules.d/70-persistent-net.rules you can setup the 
association of interface name an MAC address.

> Instead I get two virtual interfaces eth3 and eth3:avah.
> The basic information for eth3 is correct but I don't
> want the eth3:avah interface or the 169.x.x.x network.
> It's the first time I've seen it. Is it dhcp, wireless,
> or IPv6? More importantly, how do I get rid of it. You
> can see what I want from the /etc/network/interfaces file
> below and the output from ifconfig -a and route -n.

The network is the socalled link-local network. It is used for 
automatic generation of IP addresses so clients can connect without DHCP. 
See <> for a bit more information. 
The Adresses of this network are not routed on the internet. Therefore it 
usually doesn't hurt to have the virtual interface eth3:avah. If you 
really want to get rid of it, uninstall package avahi-daemon (i think, 
maybe other packages with avahi in the name).

BTW: I think it is a bit strange that all 3 interfaces are on the same 
network and have the same gateway. I'm not sure if that could work.


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