The last AppleTalk network address in the range
configured for this port. If the network to which
this AppleTalk port is connected is a non-extended
network, or if it is not a native AppleTalk port,
the value for a3ComSysAtInterfaceNetEnd shall be two octets of
zero.
Setting of this object is mandatory only for
interfaces with a3ComSysAtInterfaceType equal to seedInterface(1).