The origin of WEP comes from IEEE Std 802.11-1997 where it defines
whether the frame body of MAC frame has been encrypted using WEP
algorithm or not.
IEEE Std. 802.11-2007 changes WEP to Protected Frame, indicates
whether the frame is protected by a cryptographic encapsulation
algorithm.
Reviewed by: adrian, rpaulo
Of particular interest here is the ieee80211_radiotap(9) man page.
TODO: Flesh out ieee80211_node.9, ieee80211_proto.9.
Submitted by: bms (with help from Darron Broad)
