Trouble configuring 2 network cards.in Debian Etch

that Linux guy · 05-27-2008, 05:22 PM

Hey all. I'm trying to set up a machine to act as a firewall/DHCP server and am having trouble getting the system to use both cards. I'm running a base install of Debian Etch by the way.

Using ifconfig, I can only see Eth0 and Lo, but if I say ifconfig Eth1, I'll get info on it. I did hand modify my /etc/network/interfaces file to use both Eth0 and Eth1. My interfaces file looks like this (without commented lines)

auto lo
iface lo inet loopback

allow-hotplug eth0
iface eth0 inet dhcp

(What I added myself)

allow-hotplug eth1
iface eth1 inet static
address 192.168.1.1
netmask 255.255.255.0
broadcast 192.168.1.255

Any ideas what's going on here? Thanks for any help/insight in advance.

Takla · 05-27-2008, 06:40 PM

For my LAN facing wired static interface (eth0) I don't use allow-hotplug, I use auto eth0 so that it is up when I boot (is not waiting for a hotplug event) and also don't specify the broadcast address. My interfaces file looks like this and works fine:

Code:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 192.168.0.1
netmask 255.255.255.0

allow-hotplug wlan0
iface wlan0 inet dhcp

allow-hotplug eth1
iface eth1 inet dhcp

(I have 2 wireless interfaces, one wlan0 built into laptop and another USB interface eth1 which is better with weak signals and not always connected). This config allows eth0 to always be up awaiting connections from LAN and I use Wicd to manage the internet facing wireless interfaces (so it ignores the config for wlan0 and eth1 anyway).