On Tue, Feb 09, 2010 at 12:09:57PM +0200, Martti Kuparinen wrote: > > # ifconfig wm0 down > # ifconfig agr0 create > # ifconfig agr0 agrport wm0 > ifconfig: SIOCSETAGR: Device busy Did you remember to strip the autoconfigured IPv6 link-local address from wm0? If not, this is expected. Thor