[ubuntu] Trouble with simultaneous Ethernet for LAN and Ethernet for IP Camera

view story

http://ubuntuforums.org – Hello, I am running ubuntu 12.04. I have a desktop that has two ethernet cards. I would like to use one ethernet port (eth 1) for SSH connections or connecting to a LAN to access the internet. The other ethernet port is to use an ethernet IP camera. I am having an issue where I can use SSH or the LAN on eth1 when I have the camera disconnected from eth0. I can also use the camera on eth0 only when I am disconnected on eth1. How can I run them simultaneously? I am not very knowledgeable with networking but the /etc/network/interfaces is setup like: auto eth0 iface eth0 inet st (Hardware)