Re: Network Interface Conundrum

On Sun, 23 Sep 2012, John Crowhurst wrote:

> I'm sure we went over this one before because its a driver issue. I sent
> you a work around script that would down eth0 if wlan0 was up.

John,

   I have the script installed ... if that's the same one you provided. In
~/shell-scripts is iface,sh:

#!/bin/bash

test=`ip link show wlan0 | grep UP`
if [ -z "$test" ]; then
   ifconfig eth0 down
else
   ifconfig eth0 up
fi

   Is this the script to which you refer?

> Simple test... Plug in the Ethernet cable, then run:
>
> tail -f /var/log/messages
>
> Then unplug the cable.

   See my response to Octavio I just sent to the list.

> If you see no change in messages, the kernel cannot see the interface
> change and you know the driver is not telling the kernel to go link down.

   What driver would this be? The Sony is running the 3.2.7 kernel; my Dell
running 13.37/x86_64 with the stock 2.6.37.6 kernel does not have this
issue. Nor did any prior portable.

   If a kernel module update would fix the problem I will happily do this.

Thanks,

Rich