For RB5009 you can enable “Multicast Querier” http://forum.mikrotik.com/t/rb5009-ros-7-1-1-igmp-snooping-issue-with-l2-hw-offload/155045/5 or disable L2 hardware offloading.
Both methods work with igmp snooping.
For RB5009 you can enable “Multicast Querier” http://forum.mikrotik.com/t/rb5009-ros-7-1-1-igmp-snooping-issue-with-l2-hw-offload/155045/5 or disable L2 hardware offloading.
Both methods work with igmp snooping.