linux-kernel - 24rc8: unregister_netdevice: waiting for ... to become free. Usage count = 1?

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Date:	Wed, 23 Jan 2008 07:42:21 +0100
From:	Soeren Sonnenburg <kernel@....de>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: 24rc8: unregister_netdevice: waiting for ... to become free. Usage
	count = 1?

Dear all,

since some 2.6.24rc version I suddenly experience such messages on
console when trying to shutdown a vpn connection:

unregister_netdevice: waiting for tun0 to become free. Usage count = 1

or when removing an usb wlan dongle (although it was ifconfig wlan0
down'd before)

unregister_netdevice: waiting for wlan0 to become free. Usage count = 1

Then only when all potential connections going over that iface are gone
these messages disappear (sometimes this does not happen and the kernel
then hangs on reboot...)

Is this intended?

Soeren
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