Airplay via mDNS does not work when speaker is connected to WiFi but works when connected by cable
I have two Denon Home speakers. One is connected by cable to ETH ports on EAP655, the other one connected via WiFi, they are on VLAN40 (for media), I activate mDNS service for AirPlay and my devices which are on VLAN20 (home) are only able to use the cable connected speaker.
The WiFI connected speaker appears in the list of AirPlay devices but can't be used. When this speaker is connected by cable AirPlay works perfect. Sadly, I can't connect it by cable in the room it is located so it has to work with WiFI.
Is there any setting that I am missing to activate to allow mDNS to work for WiFi devices?
All devices are running the latest firmware.
Thanks for any help.