With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swMldSnoopingDoneTimer
Switch Mld Snooping Done Timer
1.3.6.1.4.1.171.12.34.3.2.1.8
When a querier receives a Leave Group message for a group that has group members on the reception interface, it sends Group-Specific Queries every swMldSnoopingDoneTimer to the group being left.
Back to MLD-SNOOPING-MIB MIB page.
IPHost Network monitor allows you to monitor swMldSnoopingDoneTimer on D-Link device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring D-Link IP cameras right now.