Where can I find documentation for the ifupdown package that comes
I already looked at "man interfaces", "man ifup" and the
But I'm still confused about the "mapping" feature and about the
interface name. For the mapping feature, it is not clear what it
does, and it is also unclear how the script that needs to be specified
is called and how does it return the results.
I _think_ the idea is that "ifup eth0" looks at the mapping section
for eth0, runs the script specified there, and uses the script output
to determine a `real' interface name foo, and then processes the
"iface foo" section.
For the interface name, ifconfig(8) says that it is "usually a driver
name followed by a unit number, for example eth0 for the first
Ethernet interface." But I wonder if I can use different interface
names for the same ethernet card? This would allow me to specify on
the command line the interface to use.
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