IEEE80211_FC0_VERSION_MASK
(((wh)->i_fc[0] & IEEE80211_FC0_VERSION_MASK) == (v))
(((((wh)->i_fc[0] & IEEE80211_FC0_VERSION_MASK) == (v))) && \
(((((wh)->i_fc[0] & IEEE80211_FC0_VERSION_MASK) == (v))) && \
wh->i_fc[0] |= atoi(optarg)& IEEE80211_FC0_VERSION_MASK;