network interface names

[Ian]

How does cygwin's eth(whatever) relate to the windows interface names?

For example, on my laptop, eth0 is tied to my wireless network 
connection and eth1 is tied to my wired local area connection.

I'm developing DHCP software for cygwin, and I need to be able to derive 
the cygwin network interface name (e.g. eth0, or eth1...) given either 
the connection's MAC address, its IP address, or its windows interface 
name (e.g. "Local Area Connection", or "Gigabit Integrated Controller", 
or "WLAN Mini-PCI Card #2", or something like).

Thanks for any help,
  Ian

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