Baffled by Airport

[Longman, Bill]

> A crazy question:  if I have my wireless eth1 and land-line 
> eth0 set up
> with the same IP and configuration, but eth0 is not turned 
> on, can that
> create problems?  Can eth0 interfere with eth1, even if the former is
> deactivated?

You would have to have the interface completely shutdown, I believe. Once
you bring the interface up, it sets the routing information.

You can show this by looking at the routes before and after the interface is
up.

# route
Destination   Gateway      Genmask         Iface
192.168.4.0   *            255.255.255.0   eth0
127.0.0.0     *            255.0.0.0       lo
default       192.168.4.1  0.0.0.0         eth0

# ifconfig eth0 down

# route
Destination   Gateway      Genmask         Iface
127.0.0.0     *            255.0.0.0       lo

At least that's what I see on my PB.

For me, I'd probably do:

# ifconfig eth0 0.0.0.0 down

just to be safe and see if it makes any difference. It won't, though....