If non-zero, only transmit packets of the specified size or smaller, breaking larger packets up into multiple frames.
The InfiniBand P_Key to use for this device. A value of -1 means to use the default P_Key (aka "the P_Key at index 0"). Otherwise, it is a 16-bit unsigned integer, whose high bit is set if it is a "full membership" P_Key.
The interface name of the parent device of this device. Normally %NULL, but if the #NMSettingInfiniband:p_key property is set, then you must specify the base device by setting either this property or #NMSettingInfiniband:mac-address.
The IP-over-InfiniBand transport mode. Either "datagram" or "connected".
If specified, this connection will only apply to the IPoIB device whose permanent MAC address matches. This property does not change the MAC address of the device (i.e. MAC spoofing).