Re: How to tell kernel to not bring up a network interface

On Wed, 4 Apr 2012, Rich Shepard wrote:

>  Thought I had the Sony Vaio working on both eth0 (static IP address) and
> wlan0 (dynamic IP addresses), but not yet. I installed ifplugd and it works
> if the ethernet cable is plugged in when the system boots. That is, it will
> bring the interface down and up as the cable is removed and inserted. But,
> it leaves eth0 up when the system boots without an inserted cable.

   I think I've isolated the problem: on the Sony wicd is not bringing down
eth0 before it brings up wlan0. On my Dell, booting with no ethernet cable
attached there're routes for eth0. After running 'wicd-curses' on the
console and failing to be allowed in one of the WEP-protected neighborhood
hot spots, the routing table showed only lo. No eth0 and no wlan0.

   I need to look at what wicd is doing on the Sony that it's not working as
it does on the Dell.

Rich