Hello. > I got the error when trying to use WPS with my atheros AR5416 and > the option nohwcrypt=1. > ioctl[SIOCSIWENCODEEXT]: No such file or directory Which driver are using ath5k or madwifi ? If you are using ath5k, you need -D nl80211 option. Like ./wpa_supplicant -i wlan0 -D nl80211 Regards, Masashi Honma.