I’m trying to connect my Denon AVR to HomeKit via AirPlay 2 over my home network, which uses tp-link omada SDN compatible devices. When I open up the Home app in iOS and try to add the AVR as an accessory, it never shows up. I’ve been able to use AirPlay on my smart TV before but I wasn’t sure if there was something network-side that I’ve overlooked that could be impacting this. Here are the devices + software versions at play:

Client: iPhone XS, iOS 14.3 
Apps: Home, HEOS v1.583.431 
AP: EAP225(US) v3.0, Firmware 5.0.0 Build 20200918 Rel. 58628 
Router: tl-r605, Firmware 1.0.0 Build 20200930 Rel.36519 
Switch: tp-sg2008p, Firmware 1.0.0 Build 20200608 Rel.76470 
AVR: Denon AVR-S640HR, Firmware 7300-5230-6061-3085

The AP, AVR, and router are all connected to the switch. Mitigations I’ve tried:

• turning devices on/off + closing/reopening apps
• upgrading device firmware to newest versions.
• Attaching the AVR to the AP so that it’s on the same SSID as the phone, with no success in detecting it in the Home app.
• Disabling IGMP proxy

Some mitigation’s I haven’t tried because I can’t figure out how to control them in Omada SDN:

• Disabling IGMP snooping.
• Opening ports on the router (let me know if you need more details)
• Unblocking WAN to LAN broadcast/multicast

If anyone has suggestions on how to resolve this I’d be very appreciative!