The bundle's secondary or backup destination address. This address will be used only if the primary address uses an ethernet interface and failover is enabled on that interface and the interface goes down. The secondary source forwarding address is an optional parameter, it should be a gateway on the alternate ethernet This parameter is set along with the primary source forwarding address parameter. To unconfigure this parameter a set operation is performed with the value 0.0.0.0 for the primary address, or a primary address is set with no secondary, or both primary and secondary are set to 0.0.0.0