I'm running a netbsd-8 userland with the latest nyftp current kernel on amd64 and just saw this on boot:
iwn0: starting wpa_supplicant iwn0: failed to start wpa_supplicant iwn0: Sucessfully initialized wpa_supplicant ioctl[SIOCS80211, op=16, arg_len=0]: Inappropriate ioctl for device iwn0: Failed to initialize driver interface wifi appears to work fine... just an FYI in case its relevant to anyone... Thanks David
