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20.1 Legacy Series / Multicast support
« on: May 01, 2020, 01:01:07 am »
A Linux-based hardware product that I manufacture utilizes multicast to send messages to applications on a local lan. Clients cast to IP 234.5.6.7 port 8910 and servers subscribe to these messages to identify available clients.
This all worked fine when using an Asus TM-AC1900 router on my local network. But, I recently upgraded to an OpnSense -based router (running on a Qotom embedded PC) and I can't figure out how to configure OpnSense to propagate these multicast messages. I wrote the client and server code above and my understanding is that the router is responsible for this function. But, I'm inexperienced with multicast and sophisticated routers like OpnSense, so I'd appreciate any guidance that you can provide.
This all worked fine when using an Asus TM-AC1900 router on my local network. But, I recently upgraded to an OpnSense -based router (running on a Qotom embedded PC) and I can't figure out how to configure OpnSense to propagate these multicast messages. I wrote the client and server code above and my understanding is that the router is responsible for this function. But, I'm inexperienced with multicast and sophisticated routers like OpnSense, so I'd appreciate any guidance that you can provide.