Cannot bring eth3 up "eth3: unknown interface: No such device"

Solution Verified - Updated -

Issue

  • We needed to remove eth3 from a bond and ran echo "0000:52:00.2" > /sys/bus/pci/drivers/qlcnic/unbind. This seemed to remove eth3 from the kernel, but we've been unable to add the NIC back to the system.

Environment

  • Red Hat Enterprise Linux (RHEL) 5

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