This type is used by OpenVZ venet interfaces. We "handle" such an
address type just by blanking the MAC address field.
Lack of support for this type of interface was preventing Nmap from
working on certain systems.
http://seclists.org/nmap-dev/2012/q2/763
An earlier message about this same type of interface is
http://seclists.org/nmap-dev/2009/q3/303
at least one of them is in the monitor mode. The fix was to define the
ARP_HRD_IEEE80211_RADIOTAP 802.11 radiotap header identifier in the
libdnet-stripped code. Network interfaces that are in this mode are used
by radiotap for 802.11 frame injection and reception. The bug was
reported by Tom Eichstaedt and Henri Doreau.
http://seclists.org/nmap-dev/2012/q2/449http://seclists.org/nmap-dev/2012/q2/478
[Djalal Harouni, Henri Doreau]