Hi,
when enabling the PIM SM Module (Instance + Interface) for a given VLAN (or ETH-interface), the IGMP Querier works a few times and then disappears simply from the "Interface" tab:
I found this was happening on different devices (ROS v 7.1.1).
The (dynamaic) Interface cant be brougth back. No luck with dis/re-enabling the Interface or even the Instance. The only way bringing the Interface back is a reboot, and then after 1, 2, 3, 4... "Membership Queries" the Interface is gone again...