I upgraded my Internet connection, and after changing the Modem my Ubuntu Server's eth0 doesn't come up.
I looked at /etc/netwrork/interfaces, it looks all normal eth0 is set to auto and dhcp
# The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet dhcp
In the boot process right after Ubuntu starts to run, the lights for the port to which the cable is connected to stops blinking as if no cable is connected to it.
And that's when Ubuntu is trying to configure "virtual network devices".
It then tries to configure the network devices a couple of times taking about 2 minutes, then it says "Booting system without full network configuration".
dmesg | grep eth, shows two
eth0: link downs, and one
eth0: link is not ready.
When I do ifconfig I don't get an IP.