The object indicates the type of IGMP-leave query that the
device will send on the interface the IGMP-leave message was
received.
generalQuery(1) : A General Query will be sent to all hosts
connecting to that interface.
macGenQuery(2) : A MAC-Based General Query will be sent to all
hosts in multicast groups that are associated
with the MAC-level address. MAC-Based General
Query is not a standard, it is a part of CGMP
(Cisco Group Management Protocol).
auto(3) : A Group-Specific query will be sent if there
are no IGMPv1 hosts detected in the network.
Otherwise a MAC-Based General Query will be
sent.