Re: Adhoc: IPV4 setting 'link-local'

[Dan Williams <dcbw redhat com>]

On Wed, 2010-08-04 at 11:43 +0200, Simon Schampijer wrote: 
> Hi,
> 
> creating a wireless adhoc network setting the property 'method' of the 
> setting 'ipv4' to 'link-local' does give me the following error: 
> "nm_device_wifi_set_mode(): error setting card wlan0 to mode 2: Device 
> or resource busy".

So you see this error on *both* iwl3945 and liberatas_sdio, or just
iwl3945?  This is odd, but not completely expected; NM will only
force-set the device back to infrastructure when deactivating.  That's
mostly historical as some older drivers couldn't scan well when in adhoc
mode for some reason.

> Using the property 'shared' does work fine. I have tested with nm-applet 
> (you can edit the properties of the network in the edits menu as 
> nm-applet set the property to 'shared' by default) and tried it from 
> sugar over the dbus interface, too.
> 
> I see this behavior on one machine with the iwl3945 driver and on the 
> other machine using the libertas_sdio driver it does work fine, both 
> running the latest NM F11 release 
> NetworkManager-0.7.2.997-2.git20100609. So, the issue might be on the 
> driver side? What do others think?

Looks like avahi-autoipd is being bitchy.  Need to figure out why that
is, but at the moment there isn't any log help for avahi-autoipd at all.
Can you:

mv /usr/sbin/avahi-autoipd /usr/sbin/avahi-autoipd.orig

and put this into a script named /usr/sbin/avahi-autoipd:

#!/bin/bash
avahi-autoipd --debug --syslog $@

make sure you chmod 755 that script, then try the link-local connection
again; you shouldn't need to restart NM.  This should cause avahi to
print out anything that's going wrong to /var/log/messages.

Dan

> Regards,
>     Simon
> 
> 
> 
> --- Full output ---
> 
> Aug  4 11:26:56 laptop NetworkManager: <info>  Activation 
> (wlan0/wireless) Stage 2 of 5 (Device Configure) successful.  Connected 
> to wireless network 'mammamia'.
> Aug  4 11:26:56 laptop NetworkManager: <info>  Activation (wlan0) Stage 
> 3 of 5 (IP Configure Start) scheduled.
> Aug  4 11:26:56 laptop NetworkManager: <info>  Activation (wlan0) Stage 
> 3 of 5 (IP Configure Start) started...
> Aug  4 11:26:56 laptop NetworkManager: <info>  (wlan0): device state 
> change: 5 -> 7 (reason 0)
> Aug  4 11:26:56 laptop NetworkManager: <info>  Activation (wlan0) Stage 
> 3 of 5 (IP Configure Start) started avahi-autoipd...
> Aug  4 11:26:56 laptop NetworkManager: <info>  Activation (wlan0) Stage 
> 3 of 5 (IP Configure Start) complete.
> Aug  4 11:26:56 laptop NetworkManager: <WARN>  aipd_watch_cb(): wlan0: 
> avahi-autoipd exited with error code 1
> Aug  4 11:26:56 laptop NetworkManager: <info>  (wlan0): device state 
> change: 7 -> 9 (reason 22)
> Aug  4 11:26:56 laptop NetworkManager: <info>  Activation (wlan0) failed 
> for access point (mammamia)
> Aug  4 11:26:56 laptop NetworkManager: <info>  Marking connection 
> 'mammamia' invalid.
> Aug  4 11:26:56 laptop NetworkManager: <info>  Activation (wlan0) failed.
> Aug  4 11:26:56 laptop NetworkManager: <info>  (wlan0): device state 
> change: 9 -> 3 (reason 0)
> Aug  4 11:26:56 laptop NetworkManager: <info>  (wlan0): deactivating 
> device (reason: 0).
> Aug  4 11:26:56 laptop NetworkManager: <WARN> 
> nm_device_wifi_set_mode(): error setting card wlan0 to mode 2: Device or 
> resource busy
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