IEEE80211_HTINFO_2NDCHAN_BELOW
ht->hi_byte1 |= IEEE80211_HTINFO_2NDCHAN_BELOW;
frm[0] |= IEEE80211_HTINFO_2NDCHAN_BELOW;
in->in_ht2ndchan = IEEE80211_HTINFO_2NDCHAN_BELOW;
else if (in->in_ht2ndchan == IEEE80211_HTINFO_2NDCHAN_BELOW)