On Fri, 2010-12-10 at 19:30 +0100, Francesco Gringoli wrote: > [ 1117.516031] unregister_netdevice: waiting for wlan1 to become free. Usage count = 1 > > and the device is never release (by who?). I have to reboot. That's a bug in the ipv6 code, upgrade your kernel :-) johannes