My ISP provides IPTV by multicast. If I plug the receiver directly to the incoming WAN port it works but if I put it behind the router the video feed is blocked. The ISP mentioned that a switch before the router to feed the receiver and the router should do the trick. However I do not want to add a switch since I have limited space and making it work would mean that I would need another switch in the TV cabinet.
I tried to follow the guide here https://wiki.openwrt.org/doc/howto/udp_multicast but all it resulted in was a non-responsive router which I had to reset since I could not log in anymore. Maybe I missed something specific to the Turris Omnia.
If the only issue is about the physical space you could create a virtual switch inside Omnia - either in Linux level or in the internal programmable switch level - to connect WAN, Omnia router and IPTV receiver to the same LAN. See for example https://wiki.openwrt.org/doc/uci/network/switch
What would the configuration in Luci (or commandline) look like if I wanted for example port 4 to be on a switched network with the WAN port on the Omnia?
There is an even newer one (BNG) with everything on VLAN7.
While searching for this i found https://forum.openwrt.org/viewtopic.php?id=61160 with an example for a VLAN8 version of Deutsche Telekom Entertain. I don’t think the firewall rule for DHCPv6 on vlan8 is needed. A bad side effect of this config may be flooding the wifi because of the missing igmp_snooping=1.
I have not yet received my Omnia and I’m not already familiar with OpenWRT/Luci so at the moment I cannot give you more detailed instructions how to do it.
Both IPTV Versions MSTV(old one) and NGTV(new one) works on BNG or Non-BNG. Both Versions supports only IPV4.
So important to work will be IGMPV3 because of switching the Unicast-Stream after 5seconds to multicast.