In-place upgrade process is inhibited when the Leapp upgrade tool detects presence of any Network Interface Card (NIC) with a name based on the prefix used by the kernel (eth) and multiple NICs exist on the system (ignoring virtual NICs). Stability of such names can not be guaranteed on RHEL 8, and the system would likely lose network connectivity after the upgrade.
In-place upgrade from Red Hat Enterprise Linux 7 to Red Hat Enterprise Linux 8.
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