All Net3 DMX-RDM Gateways, Response Mk 1 Gateways, and Net 2/3 Nodes in Net3 mode running versions less than 6.0.1 require IGMP v2 if enabled from the managed switch. Gateways running 6.0.1+ can use IGMP v3.
Net2/3 Nodes in Net2 mode do not use IGMP.
