Sorry if this is the wrong forum...I couldn't decide whether it fit best in OS, networking, etc...
Basically, the machine was fine. Then two days ago, after a reboot, access to the internet went dead. I rebooted again and the startup shows eth0 OK'd (dhcp). I run ifconfig and it seems fine there too. So I ifdown eth0, then ifup eth0. It said, "Determining IP info....Operation failed. done." Rather odd since there was no delay before failing and when it fails, isn't supposed to report "done." In fact, checking ifconfig, eth0 did find it's IP address. Only now, it says "NOTRAILERS RUNNING" instead of "RUNNING MULTICAST."
So I head to another machine and I am successful in pinging and SSH'ing into that machine. So the network interface is working...somewhat. When I boot to Windows, everything works fine on that machine. The problem persists even when I take down the firewall and specify static IP.
The only time I've seen something similar is when linux confused one of the network cards (reporting mac address: FFFFFFFFF...). I switched PCI slots and it was fixed. This time, the NIC is built-in. Using a different network card is very difficult on this machine because it has to go through a long process of registration. I'll leave that as my last resort if I can't find a logical software explanation.
Any guesses at what the problem might be would be helpful...
Basically, the machine was fine. Then two days ago, after a reboot, access to the internet went dead. I rebooted again and the startup shows eth0 OK'd (dhcp). I run ifconfig and it seems fine there too. So I ifdown eth0, then ifup eth0. It said, "Determining IP info....Operation failed. done." Rather odd since there was no delay before failing and when it fails, isn't supposed to report "done." In fact, checking ifconfig, eth0 did find it's IP address. Only now, it says "NOTRAILERS RUNNING" instead of "RUNNING MULTICAST."
So I head to another machine and I am successful in pinging and SSH'ing into that machine. So the network interface is working...somewhat. When I boot to Windows, everything works fine on that machine. The problem persists even when I take down the firewall and specify static IP.
The only time I've seen something similar is when linux confused one of the network cards (reporting mac address: FFFFFFFFF...). I switched PCI slots and it was fixed. This time, the NIC is built-in. Using a different network card is very difficult on this machine because it has to go through a long process of registration. I'll leave that as my last resort if I can't find a logical software explanation.
Any guesses at what the problem might be would be helpful...