Stop interfaces from autoconfig, and have more than one profile

[Jan Moren]

I'm currently dealing with my network subsystem, and I'm unsure how to
perform some tasks in the "right" (ie. supported, not likely to break
stuff) way.

First, how do I turn off the automagic enabling of eth0 when booting or
waking up from sleep? A lot of the time, I use either wireless or have
no network at all. It is specifically a problem for wireless use since I
need to either kill ifup and related tasks, or wait for upwards of a
minute before being able to configure the wireless interface.

Second, is there a neat way to have more than one wireless interface
profile, so I could use my WEP encrypted profile at home, and use
insecure (but convenient) public networks elsewhere? At this point I
have two different /etc/network/interfaces files and rename them as
needed but that is a bit inconvenient to say the least.

I'd like to hear how other people have dealt with these two issues.


-- 
Dr. Jan Morén (mr)              
Japan:  090-3622 8920           jan.moren at lucs.lu.se
Sweden: 031-360 7723            http://lucs.lu.se/people/jan.moren