ifupdown problems

[Grahame Jordan <gbj@theforce.com.au>]

Hi,

I am using Kubuntu 7.4 but the same happens on Debian etch.

When I plug in my usb cable for my gumstix thing the usb interface comes 
up but it does not even attempt to get the dhcp from the gumstix.
The problem seems to be that the interface is up before it gets to ifup 
and therefore ifup thinks the interface is already up but it's not.

eg:
ifup usb0
ifup: interface usb0 already configured

In my old sarge interfaces file I had this:
mapping hotplug
script grep
map usb0
iface usb0 inet dhcp

But this does not work on Kubuntu 7.4 for "hotplug", because in 
85-ifupdown.rules we have:

ACTION="add",     RUN+="/sbin/start-stop-daemon --start --background 
--pidfile /var/run/network/bogus --startas /sbin/ifup -- --allow auto 
$env{INTERFACE}"

Which will only ifup the auto sections of interfaces. So I changed it to 
--allow hotplug --force.

ACTION="add",      RUN+="/sbin/start-stop-daemon --start --background 
--pidfile /var/run/network/bogus --startas /sbin/ifup -- --allow hotplug 
--force $env{INTERFACE}"

The --force is added to "solve" the issue with the dhcp bit not working.

So I am guessing there is a bug in the ifup -- command

Other issue:
On the gumstix device I have usb and bluetooth.  When the usb is plugged 
in the bluetooth is disabled on the gumstix. However the Linux box does 
not know that the bluetooth has actually gone downand still holds on to 
the dhcp  while the usb is trying to dhcp the same device.  I have 
written some ugly scripts to /etc/init.d/bluetooth stop etc but this 
cannot work in general practice.
Anyway I would expect the bluetooth layer to notify ifup/ifdown if hte 
link goes down. How is that supposed to happen?  In Debian Sarge/Kubunto 
6.? this happened.

Thanks

Grahame Jordan







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