enabling HT mode on ath 938x and WPA question

[Peter Lai]

What is the correct way to invoke HT (ng) mode on 938x cards? I have a
TP LINK WDN4800, and it seems to require 2 invocations of ifconfig
mode 11g to put it into ng mode. The first invocation sets it to 11g
then the second one turns on 11ng/HT40+ (according to the output of
ifconfig). It seems that when the card is first initialized/booted it
randomly picks a band.

Is there a way in rc.conf to specify this behavior?

Also, when I am using hostapd, my wireless clients see the BSSID as
WPA-enabled whereas yonder generic routers (linksys, 2wire, etc.) show
up as WPA/WPA2 (but I only tested this with Android clients).

My hostapd.conf:
interface=wlan0
debug=2
#doesn't seem to do anything, how do I turn on logging to /var/log/messages
ctrl_interface=/var/run/hostapd
ctrl_interface_group=wheel
ssid=myssid
wpa=1
wpa_passphrase=mysekret
wpa_key_mgmt=WPA-PSK
wpa_pairwise=CCMP