One of my computers I recently installed Ubuntu 9.10 on, lost its connection to the network somehow, and even though both of the NICs had flashing lights when connected, the computer would not connect to any network resource.
After some quick Googling I checked the /etc/network/interfaces and discovered the only thing configured was the loopback interface, which upon checking my laptop with Ubuntu 9.10 appears to be the default setting.
At first finding this somewhat odd, I manually added both eth0 and eth1 and set them up to use DHCP and rebooted the computer to see if this would work.
Logging back in, the network-connectivity icon (Network Manager?) still showed no signs of connection, but loading Firefox and browsing to a website confirmed the connection was working, and it has since.
After some quick Googling I checked the /etc/network/interfaces and discovered the only thing configured was the loopback interface, which upon checking my laptop with Ubuntu 9.10 appears to be the default setting.
At first finding this somewhat odd, I manually added both eth0 and eth1 and set them up to use DHCP and rebooted the computer to see if this would work.
Logging back in, the network-connectivity icon (Network Manager?) still showed no signs of connection, but loading Firefox and browsing to a website confirmed the connection was working, and it has since.
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