diff -up wpa_supplicant-0.6.4/src/drivers/driver_wext.c.use-IW_ENCODE_TEMP wpa_supplicant-0.6.4/src/drivers/driver_wext.c
--- wpa_supplicant-0.6.4/src/drivers/driver_wext.c.use-IW_ENCODE_TEMP	2008-08-10 13:33:12.000000000 -0400
+++ wpa_supplicant-0.6.4/src/drivers/driver_wext.c	2008-08-27 17:22:06.000000000 -0400
@@ -1836,6 +1836,7 @@ static int wpa_driver_wext_set_key_ext(v
 	os_memset(&iwr, 0, sizeof(iwr));
 	os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 	iwr.u.encoding.flags = key_idx + 1;
+	iwr.u.encoding.flags |= IW_ENCODE_TEMP;
 	if (alg == WPA_ALG_NONE)
 		iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
 	iwr.u.encoding.pointer = (caddr_t) ext;
@@ -1967,6 +1968,7 @@ int wpa_driver_wext_set_key(void *priv, 
 	os_memset(&iwr, 0, sizeof(iwr));
 	os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 	iwr.u.encoding.flags = key_idx + 1;
+	iwr.u.encoding.flags |= IW_ENCODE_TEMP;
 	if (alg == WPA_ALG_NONE)
 		iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
 	iwr.u.encoding.pointer = (caddr_t) key;
@@ -1981,6 +1983,7 @@ int wpa_driver_wext_set_key(void *priv, 
 		os_memset(&iwr, 0, sizeof(iwr));
 		os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 		iwr.u.encoding.flags = key_idx + 1;
+		iwr.u.encoding.flags |= IW_ENCODE_TEMP;
 		iwr.u.encoding.pointer = (caddr_t) NULL;
 		iwr.u.encoding.length = 0;
 		if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {