If this object and the mgmdRouterInterfaceImmedtLeave object are both set to 'true', then when the router receives a request to leave a group or source, it immediately updates the routing table without running a timer. However, it also sends a single Group Specific Query message, with Max Response Time given by the mgmdRouterInterfaceLstMemQryIvl object. This behavior gives a zero leave latency, so that multicast traffic ceases as soon as possible for the given group, but also allows for there being another connected host that still wants this traffic. This behavior is useful when there is the possibility of a second connected host that still needs to be joined, but when it is preferable for the router to leave the group quickly (for example for bandwidth reasons) even if this means a short break in the multicast data for any second connected host. Note that there is no robustness with the Specific Query; it is sent only once, whatever the value of mgmdRouterInterfaceRobustness. This object has no effect when the mgmdRouterInterfaceImmedtLeave object is set to 'false'.