Multicast configuration for EE IPTV

[Gooshy]

Hi,

I am trying to get the live TV channels to work on my EE TV box (EE is my TV/Broadband vendor in the UK).  If I use the supplied EE router it works with no issues.  When I replace the supplied router with an Opnsense it stops.  I have access to the Internet, Opnsense is setup to perform NAT/DHCP to the local LAN.  Having read lots of forums, reddit posts and the Opnsense docs, I think I need to enable IGMP by enabling multicast forwarding and setting up a multicast route.  Nothing I've tried so far has worked, I don't see any multicast traffic in the logs. 

Can anyone make any suggestions on what I can try?  You cannot view this attachment.You cannot view this attachment.