Multicast traffic between LAN interfaces on different subnets
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@eric8bits The package avahi will allow you to do multicast between interfaces.
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@rcoleman-netgate so I gave it a try and yes something changed. I now have AirPlay available. Apple devices can broadcast across LAN interfaces. Only Roon’s own protocol is missing. They are not showing up.
I guess they use something funky?
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@eric8bits ¯\_(ツ)_/¯ I've only ever used it for Apple's mDNS stuff (airplay, timemachine, etc.)
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@rcoleman-netgate yes I think Roon is blocking it.
I have two options:
Buy a switch or bridge LAN interfaces on the Netgate.
Bridging LAN interfaces is OK?
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@eric8bits It is not something we'd recommend... Bridges in BSD should be used only when absolutely necessary. A switch won't resolve your issue unless you're going to eliminate the routing, too.
I'd run a packet capture on the Roon to see what it's trying to do and see if you can forward that somehow.
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@rcoleman-netgate based on what I've been reading, Roon "sends broadcast messages to UDP/9003."
https://github.com/synfinatic/udp-proxy-2020
Is this something I can solve within pfSense?
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@eric8bits I think you should solve it by putting all the devices in the same subnet. If you need a switch for that and maybe a wireless access point, both with vlan support, then get those. A firewall isn't a switch.
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@bob-dig I think that is the best advice. Thanks!
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@eric8bits Maybe your "roon"-device can be in two subnets, if it has two NICs.
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@bob-dig if only. It does not however. I am going to solve it they way I should solve it. No fancy, funky tricks. Just all equipment doing what they are designed to do.
I will move everything into the same subnet.
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@eric8bits said in Multicast traffic between LAN interfaces on different subnets:
I will move everything into the same subnet.
I like that.
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@bob-dig said in Multicast traffic between LAN interfaces on different subnets:
I think you should solve it by putting all the devices in the same subnet. If you need a switch for that and maybe a wireless access point, both with vlan support, then get those. A firewall isn't a switch.
I agree with the last one. However, a switch cannot filter anything normally, but pfSense can, even on bridged interfaces sharing the same L2.
So there are specific circumstances, where a bridge may be the preferred solution.
