On the Dell laptop Inco (101.29) we have two Ethernet cards when the
Laptop is docked and one when not docked. The card in the Laptop
itself is identified as eth0 when not docked but as
eth2 when docked, in which case the docking station Ethernet
card is identified as eth0.
The laptop's internal Ethernet card is only used when the laptop is
not docked. Thus we can get away with configuring eth0 for
both situations and eth2 as a removable card so that it is
not automatically configured when the machine is booted!
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