Redetect eth0 on Linux systems
SIOCSIFADDR No such device eth0 error while getting interface flags - Ubuntu Forums
/etc/udev/rules.d/70-persistent-net.rules contains the MAC address to eth device mappings. Delete the lines like below, noting the module name on the "# PCI device" line:
1. PCI device xxxxxxxxxxx (module)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="xxxxxxx", NAME="eth0"
This removes the MAC to eth device mapping info. Now we need to restart udev to allow the change to take effect:
/etc/init.d/udev restart
Next step is to "bounce" the kernel module for the ethernet device. Use the module name from the 70-persistent-net.rules file noted above:
modprobe -r module
modprobe module
"ifconfig" should now show the eth0 interface as up and running.
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