Ethernet naming [was Re: kernel frameworks for jumbo frame]

[Mouse <mouse%Rodents-Montreal.ORG@localhost>]

> What I struggle to tell, regardles of OS, is if a device is physical
> or virtual (such as PPP, TAP or TUN).

Why do you care?  I'm having trouble thinking of a reason to care, and,
actually, I'm not sure you _should_ be able to tell.  Indeed, the
concept we usually think of as a network interface is a virtualization,
provided (by the driver and some pieces of MI kernel) atop the actual
hardware.

Also, I could argue whether ppp is virtual or not; it seems to me it's
a defensible position that ppp, at least when connected to a real
serial port, is as real an interface as any Ethernet, just using (very)
different layers 1 and 2.

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