forceTrue: This value indicates that the administrator requires the MAC
to be treated as if it is connected to a point-to-point LAN
segment, regardless of any indications to the contrary that
are generated by the MAC entity.
forceFalse: This value indicates that the administrator requires the MAC
to be treated as if it is connected to a non-point-to-point
LAN segment, regardless of any indications to the contrary
that are generated by the MAC entity.
auto: This value indicates that the administrator requires the
point-to-point status of the MAC to be determined in accordance
with the specific MAC procedures defined in 6.5.