I correct myself: Ron Stodden wrote:
I believe the arp command probably has the ability to change the eth number based on the MAC address of the NIC.Should be:
I believe the arp command probably has the ability to change the kernel-assigned eth number by using the MAC of the NIC at the other end of the link as a link identifier, a known reference point, assumed not to change.
arp can tell you the value of that MAC. For this reason, it's a good idea to stick a label on all your network devices showing the MAC. MACs are assigned uniquely by the device manufacturer. They are non-volatile on the NIC, but can be changed by a driver command..
See: man arp
--
Ron. [Melbourne, Australia]
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