This guide has worked for me too.
Make sure you are directly connected via ethernet to your router when you try out multicast. Turns out I have issues with multicast and my Ubiquiti access point. When I was setting up multicast I was initially doing it over WiFi and attributed multicast not working to OPNsense, where in fact the firewall setup was correct.
Make sure you are directly connected via ethernet to your router when you try out multicast. Turns out I have issues with multicast and my Ubiquiti access point. When I was setting up multicast I was initially doing it over WiFi and attributed multicast not working to OPNsense, where in fact the firewall setup was correct.