I am trying to configure an Ubuntu 10.04 desktop edition as a server. I currently have the DHCP server working through eth0. My problem is that I only have one Ethernet port, and am receiving Internet though a mobile hotspot on my phone through wlan0, and whenever I attempt to connect through wlan0 and eth0 I am unable to access the Internet through the server or the clients. When I disconnect from eth0 I then regain access. I have searched extensively for a solution, and have come up short. Any help is appreciated.