Hi @maik,
I’m currently more concerned with the topic of IGMP. You read about so many problems that Ubiquiti products put me off a bit.
Once the IGMP server is running, it is running. I just took a look, I made the first post on this topic on May 3, 2017. Since then I have never had any problems with the IGMP, nor with testing firmware etc.
But it’s true, Ubiquiti has one or two shortcomings. These construction sites have increased with the introduction of the UniFi® Dream Machine or UniFi® Dream Machine Pro. These are the latest generation gateways, but the functions are implemented very superficially. This is missing, for example. the IGMP server.
I would say: Such a real banana product! (it matures with the customer).
The alternative to the IGMP server exists and has been running for me for a few days:
You bypass the USG and also feed the IB network into a VLAN only network behind the USG, which is only connected to the TV boxes. If necessary, you can create static routes in the IB in order to make the internal networks of the USG known to the IB.
Advantage: No adjustments with the config.gateway.json and thus problems with the IGMP server.
Disadvantage: TV box apps such as: Plex no longer has access to internal resources so easily (Firewall Rules USG).
Best regards
Roli
P.S. Many thanks to @Jeickeukei13 for the tip, he solved his problem the alternative way.