View Full Version : [ubuntu] Two Nics Ubuntu Server 9.04

April 28th, 2009, 07:19 PM
Hi !

I have an EVGA dual NIC and I got one of the cards connected to my LAN and the other to my ISP, when both cards are plugged I cannot browse the internet, if I unplug one I can , both are set to dhcp I want to acccess my server from the outside world and I haven't been able to do it so far :-(, help me up please!


April 28th, 2009, 08:34 PM
Are the two network interfaces on different subnets?


April 28th, 2009, 09:14 PM
Yes , one has a a public ip


the other has


April 28th, 2009, 09:53 PM
my /etc/network/interfaces file looks like

auto eth0
iface eth0 inet dhcp

auto eth1
iface eth1 inet dhcp

April 28th, 2009, 11:15 PM
What are results of route? In particular, what is gateway. Also, what is in /etc/resolv.conf? I'm wondering if LAN information is overwriting ISP's info.

April 28th, 2009, 11:21 PM
now I could see if I try to up the two interfaces it shows

inferfaces:11 unknown method
ifdown couldn't read interfaces file....

inferfaces:11 unknown method
ifup couldn't read interfaces file.......

if I use #s to comment out the eth1 interface it will load , while if uncommented won't work properly returning that error.