On this router i configured IGMP after admin guide, but IGMP not workin. Some times (after long time down) it working just few seconds (it look like it working until server send request abiut client live or died) and after this it not working at all....

While configuring IGMP on Cisco SB RV180W router i face problem, i'm added Igmp proxy, allowed networks, but IPTV is still not working properly