After configuring the airplay feature of my Yamaha CRX-N470d I encountered issues with my wifi router. For the wifi I am using an Zyxel NBG-419N v2. The Zyxel router by default has the UPnP feature deactivated. To get the airplay running correctly on the Yamaha device the UPnP feature must be activated.
In my case the router is configured in access point point mode. To get airplay running I additionally needed to enable this setting at the main router.
